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Strong Gravity and High-Energy Physics

Deliverables

Shadows of black-hole binaries

Use numerical methods to evolve in time a binary of hairy black hole solutions to obtain gravitational wave templates of the process and monitor the scalar hair dynamics. A particularly interesting question is how the scalar field settles down in the final configuration. Initial evolutions will be performed for the hairy black hole solutions found by team members in previous work. and subsequently extended to more general models.

Black-hole grazing collisions

Using the tools developed in the previous delivrables, we will perform simulations of grazing collisions of black holes in higher dimensions and extract the gravitational waves from these collisions, the scattering threshold, i.e. the impact parameter below which the collision leads to formation of a single black hole and above which the colliding objects scatter off to infinity. The possibility of super-Planckian curvature will be explored extending existing results in the literature. The results will be compared with shock-wave and particle calculations which furthermore serve as possible methods to extrapolate results to infinite boost parameters.

Black holes with scalar fields

Combining analytic with numerical work, black-hole solutions with scalar fields will be studied. Time evolutions of single-black-hole solutions obtained from the Einstein equations coupled to the Klein-Gordon equations will be analysed and the results compared with approximation calculations. The stability of the spacetimes will be explored through studying different types of initial perturbations superposed onto the initial black-hole solution. The emission of gravitational and scalar radiation will be computed.

Non-linear superradiant instability

One outstanding issue left unresolved in the understanding of superradiant instabilities concerns accurate, long-term nonlinear evolutions of the development of superradiant instabilities around black holes. These are important to verify recent claims that the instability can be understood with linear techniques and to compute accurate gravitational-waveforms from the system. We will provide accurate, long-lasting simulations, to yield the scalar-instability growth and its subsequent saturation by gravitational wave emission, allowing gravitational-wave templates to be generated.

Bounds on particle masses using gravity

Building on the previous deliverables, we will provide detailed models of the evolution of axion-like particles in strong-field gravity. This will involve nonlinear evolutions of the Einstein field equations with non-trivial sources, including realistic stars and magnetic fields.

Compact binary waveform

Gravitational waveforms emitted in compact binary mergers, computed in modified theories of gravity such as extended scalar-tensor gravity (Horndesky), quadratic gravity theories and Lorentz violating theories will be studied through numerical simulations. For some theories, this requires determining the subsets of the theories that is well-posed, i.e. amenable for numerical time evolutions. Scalar-tensor theories allow for a straightforward extension of exisiting general-relativity codes and will therefore be the first to be studied.

Wave extraction, initial data

Generalize the wave extraction tools to the case of non-axisymmetric spacetime. Similarly generalize the construction of initial data, that is solutions to the Einstein constraint equations, to black holes with non-zero impact parameter. Perform test simulations of grazing collisions to ensure high accuracy of these tools.

Astrophysical Observables

Determine astrophysical observables, to be detected by X-ray (ATHENA, LOFT) and radio telescopes (PTA) carrying the imprint of possible modified gravity theories, such as quasi-periodic oscillations in the X-ray flux from accreting black holes and modifications in the binary pulsar orbits (month 24).

Shadows of single black holes

Numerically evolve boson-stars and single-black-hole spacetimes with hair for the case of self-interaction of the scalar field. Identify smoking guns of the self-interaction. Extend the study to higher-dimensional black holes of non-spherical topology and determine the stability of these spacetimes through fully non-linear evolutions by adding bar-shaped perturbations to the initial analytic solutions.

Black-hole head-on collisions

Exploration of head-on collisions in higher-dimensional spacetimes up to about 10 dimensions through numerical investigations using the framework developed in the previous deveriable. Comparison of the numerical results with predictions from shock-wave and point-particle calculations. This study will first explore the equal-mass case with zero initial velocity. Non-vanishing boosts and unequal-mass systems will be explored subsequently to identify the maximum possible loss of kinetic energy in the form of gravitational radiation in ultra-relativistic head-on collisions.

Structure of stars withdark cores

The capture of dark matter by neutron stars is expected to lead to gravitational collapse of the system with strong electromagnetic signatures. Notwithstanding, a detailed model for dark matter accretion or star composition has not been developed to date. We will model dark-matter stars through composite boson-fermion matter and compute the stability diagram and time-development of these configurations. In addition, we will model the interaction of dark matter with the star material, and consequent triggering of superradiance in stars.

Smoking Guns

Use numerical and analytic methods to construct an explicit form of the spacetime metric describing black holes and neutron stars in a large class of modified gravity theories. This will be a fundamental tool to identify new unexpected phenomena occurring in such theories in the strong-field regime, which could be used as “smoking guns” for deviation from general relativity in this regime.

Wave extraction in axisymmetry

Implement wave extraction in the form of the higher-dimensional analogue of the Newman-Penrose scalar as developed in the recent literature. Test the extraction method for the case of head-on collisions of black holes starting from rest against other methods used to calculate the energy emitted in gravitational radiation.

Collisions of hairy BHs

"Black holes surrounded by long-term stable, fundamental fields act ""in some aspects"" like astrophysical black holes surrounded by accretion disks. As such, these systems can be used to understand possible modified gravitational-wave emission and other dynamical effects. We will perform collisions of black holes surrounded by scalar clouds. The initial data for this problem can be set using previous work by team members. The alignment of black hole spin with accretion disks is a robust prediction of basically all models, but it has yet to be verified though nonlinear evolutions. We will perform such evolutions in a carefully selected setup with bosonic clouds. We will further explore scenarios where matter is allowed to couple to bosonic fields. There, objects orbiting around supermassive black holes may ""float"" on a fixed circular geodesic for long timescales, energy being drawn from the hole's rotational energy. Floating orbits are observationally interesting, producing potentially observable effects such as the halting of inspirals (perhaps even producing gaps in accretions disks), and giving rise to nearly monochromatic waves. Detection of these orbits is tantamount to searching for resonances, as routinely performed at particle accelerators. We will study floating in detail by understanding the evolution of eccentric orbits or spinning objects, finite-size and finite mass effects, and nonlinear simulations of extreme-mass-ratio inspirals."

Black holes with gauge fields

"Building on deliverable 5, analytic methods will be combined with numerical tools to study black-hole solutions with vector or ""gauge"" fields. Time evolutions of single-black-hole solutions obtained from the Einstein equations coupled to the Maxwell equations will be analysed and the results compared with approximation calculations. The stability of the spacetimes will be explored through studying different types of initial perturbations superposed onto the initial black-hole solution. The emission of gravitational and scalar radiation will be computed."

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Publications

Dirac perturbations on Schwarzschild–anti–de Sitter spacetimes: Generic boundary conditions and new quasinormal modes

Author(s): Mengjie Wang, Carlos Herdeiro, Jiliang Jing
Published in: Physical Review D, Issue 96/10, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.104035

Gravitational wave searches for ultralight bosons with LIGO and LISA

Author(s): Richard Brito, Shrobana Ghosh, Enrico Barausse, Emanuele Berti, Vitor Cardoso, Irina Dvorkin, Antoine Klein, Paolo Pani
Published in: Physical Review D, Issue 96/6, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.064050

Gravitational Waves from Binary Black Hole Mergers inside Stars

Author(s): Joseph M. Fedrow, Christian D. Ott, Ulrich Sperhake, Jonathan Blackman, Roland Haas, Christian Reisswig, Antonio De Felice
Published in: Physical Review Letters, Issue 119/17, 2017, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.119.171103

Stochastic and Resolvable Gravitational Waves from Ultralight Bosons

Author(s): Richard Brito, Shrobana Ghosh, Enrico Barausse, Emanuele Berti, Vitor Cardoso, Irina Dvorkin, Antoine Klein, Paolo Pani
Published in: Physical Review Letters, Issue 119/13, 2017, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.119.131101

Long-Lived Inverse Chirp Signals from Core-Collapse in Massive Scalar-Tensor Gravity

Author(s): Ulrich Sperhake, Christopher J. Moore, Roxana Rosca, Michalis Agathos, Davide Gerosa, Christian D. Ott
Published in: Physical Review Letters, Issue 119/20, 2017, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.119.201103

Post-Kerr black hole spectroscopy

Author(s): Kostas Glampedakis, George Pappas, Hector O. Silva, Emanuele Berti
Published in: Physical Review D, Issue 96/6, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.064054

Asymptotically flat scalar, Dirac and Proca stars: Discrete vs. continuous families of solutions

Author(s): Carlos A.R. Herdeiro, Alexandre M. Pombo, Eugen Radu
Published in: Physics Letters B, Issue 773, 2017, Page(s) 654-662, ISSN 0370-2693
DOI: 10.1016/j.physletb.2017.09.036

Self-gravitating oscillons and new critical behavior

Author(s): Taishi Ikeda, Chul-Moon Yoo, Vitor Cardoso
Published in: Physical Review D, Issue 96/6, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.064047

About gravitational-wave generation by a three-body system

Author(s): Matteo Bonetti, Enrico Barausse, Guillaume Faye, Francesco Haardt, Alberto Sesana
Published in: Classical and Quantum Gravity, Issue 34/21, 2017, Page(s) 215004, ISSN 0264-9381
DOI: 10.1088/1361-6382/aa8da5

Lensing and dynamics of ultracompact bosonic stars

Author(s): Pedro V. P. Cunha, José A. Font, Carlos Herdeiro, Eugen Radu, Nicolas Sanchis-Gual, Miguel Zilhão
Published in: Physical Review D, Issue 96/10, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.104040

Skyrmions, Skyrme stars and black holes with Skyrme hair in five spacetime dimension

Author(s): Yves Brihaye, Carlos Herdeiro, Eugen Radu, D.H. Tchrakian
Published in: Journal of High Energy Physics, Issue 2017/11, 2017, ISSN 1029-8479
DOI: 10.1007/JHEP11(2017)037

Gravitational wave signatures of highly compact boson star binaries

Author(s): Carlos Palenzuela, Paolo Pani, Miguel Bezares, Vitor Cardoso, Luis Lehner, Steven Liebling
Published in: Physical Review D, Issue 96/10, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.104058

Orbital fingerprints of ultralight scalar fields around black holes

Author(s): Miguel C. Ferreira, Caio F. B. Macedo, Vitor Cardoso
Published in: Physical Review D, Issue 96/8, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.083017

Light-Ring Stability for Ultracompact Objects

Author(s): Pedro V. P. Cunha, Emanuele Berti, Carlos A. R. Herdeiro
Published in: Physical Review Letters, Issue 119/25, 2017, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.119.251102

Dynamical Formation of Kerr Black Holes with Synchronized Hair: An Analytic Model

Author(s): Carlos A. R. Herdeiro, Eugen Radu
Published in: Physical Review Letters, Issue 119/26, 2017, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.119.261101

Superradiance in the BTZ black hole with Robin boundary conditions

Author(s): Claudio Dappiaggi, Hugo R.C. Ferreira, Carlos A.R. Herdeiro
Published in: Physics Letters B, Issue 778, 2018, Page(s) 146-154, ISSN 0370-2693
DOI: 10.1016/j.physletb.2018.01.018

Black-hole head-on collisions in higher dimensions

Author(s): William G. Cook, Ulrich Sperhake, Emanuele Berti, Vitor Cardoso
Published in: Physical Review D, Issue 96/12, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.124006

Astrometric Search Method for Individually Resolvable Gravitational Wave Sources with Gaia

Author(s): Christopher J. Moore, Deyan P. Mihaylov, Anthony Lasenby, Gerard Gilmore
Published in: Physical Review Letters, Issue 119/26, 2017, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.119.261102

General first-order mass ladder operators for Klein–Gordon fields

Author(s): Vitor Cardoso, Tsuyoshi Houri, Masashi Kimura
Published in: Classical and Quantum Gravity, Issue 35/1, 2018, Page(s) 015011, ISSN 0264-9381
DOI: 10.1088/1361-6382/aa9a04

Eccentric, nonspinning, inspiral, Gaussian-process merger approximant for the detection and characterization of eccentric binary black hole mergers

Author(s): E. A. Huerta, C. J. Moore, Prayush Kumar, Daniel George, Alvin J. K. Chua, Roland Haas, Erik Wessel, Daniel Johnson, Derek Glennon, Adam Rebei, A. Miguel Holgado, Jonathan R. Gair, Harald P. Pfeiffer
Published in: Physical Review D, Issue 97/2, 2018, ISSN 2470-0010
DOI: 10.1103/PhysRevD.97.024031

Geodesic Models of Quasi-periodic-oscillations as Probes of Quadratic Gravity

Author(s): Andrea Maselli, Paolo Pani, Roberto Cotesta, Leonardo Gualtieri, Valeria Ferrari, Luigi Stella
Published in: The Astrophysical Journal, Issue 843/1, 2017, Page(s) 25, ISSN 1538-4357
DOI: 10.3847/1538-4357/aa72e2

Quasinormal Modes and Strong Cosmic Censorship

Author(s): Vitor Cardoso, João L. Costa, Kyriakos Destounis, Peter Hintz, Aron Jansen
Published in: Physical Review Letters, Issue 120/3, 2018, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.120.031103

Probing the universality of synchronised hair around rotating black holes with Q -clouds

Author(s): Carlos Herdeiro, Jutta Kunz, Eugen Radu, Bintoro Subagyo
Published in: Physics Letters B, Issue 779, 2018, Page(s) 151-159, ISSN 0370-2693
DOI: 10.1016/j.physletb.2018.01.083

Spectroscopy of Kerr Black Holes with Earth- and Space-Based Interferometers

Author(s): Emanuele Berti, Alberto Sesana, Enrico Barausse, Vitor Cardoso, Krzysztof Belczynski
Published in: Physical Review Letters, Issue 117/10, 2016, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.117.101102

Iron Kα line of Kerr black holes with scalar hair

Author(s): Yueying Ni, Menglei Zhou, Alejandro Cárdenas-Avendaño, Cosimo Bambi, Carlos A R Herdeiro, Eugen Radu
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2016/07, 2016, Page(s) 049-049, ISSN 1475-7516
DOI: 10.1088/1475-7516/2016/07/049

Shadows of Kerr black holes with and without scalar hair

Author(s): Pedro V. P. Cunha, Carlos A. R. Herdeiro, Eugen Radu, Helgi F. Rúnarsson
Published in: International Journal of Modern Physics D, Issue 25/09, 2016, Page(s) 1641021, ISSN 0218-2718
DOI: 10.1142/S0218271816410212

Black holes and gravitational waves in models of minicharged dark matter

Author(s): Vitor Cardoso, Caio F.B. Macedo, Paolo Pani, Valeria Ferrari
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2016/05, 2016, Page(s) 054-054, ISSN 1475-7516
DOI: 10.1088/1475-7516/2016/05/054

Kerr–Newman black holes with scalar hair

Author(s): Jorge F.M. Delgado, Carlos A.R. Herdeiro, Eugen Radu, Helgi Rúnarsson
Published in: Physics Letters B, Issue 761, 2016, Page(s) 234-241, ISSN 0370-2693
DOI: 10.1016/j.physletb.2016.08.032

Inside black holes with synchronized hair

Author(s): Yves Brihaye, Carlos Herdeiro, Eugen Radu
Published in: Physics Letters B, Issue 760, 2016, Page(s) 279-287, ISSN 0370-2693
DOI: 10.1016/j.physletb.2016.06.078

Spinning boson stars and Kerr black holes with scalar hair: The effect of self-interactions

Author(s): Carlos A. R. Herdeiro, Eugen Radu, Helgi F. Rúnarsson
Published in: International Journal of Modern Physics D, Issue 25/09, 2016, Page(s) 1641014, ISSN 0218-2718
DOI: 10.1142/S0218271816410145

Distinguishing black-hole spin-orbit resonances by their gravitational wave signatures. II. Full parameter estimation

Author(s): Daniele Trifirò, Richard O’Shaughnessy, Davide Gerosa, Emanuele Berti, Michael Kesden, Tyson Littenberg, Ulrich Sperhake
Published in: Physical Review D, Issue 93/4, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.93.044071

Scalar field dark matter and the Higgs field

Author(s): O. Bertolami, Catarina Cosme, João G. Rosa
Published in: Physics Letters B, Issue 759, 2016, Page(s) 1-8, ISSN 0370-2693
DOI: 10.1016/j.physletb.2016.05.047

Gravitational waves from the remnants of the first stars

Author(s): Tilman Hartwig, Marta Volonteri, Volker Bromm, Ralf S. Klessen, Enrico Barausse, Mattis Magg, Athena Stacy
Published in: Monthly Notices of the Royal Astronomical Society: Letters, Issue 460/1, 2016, Page(s) L74-L78, ISSN 1745-3933
DOI: 10.1093/mnrasl/slw074

Post-Newtonian evolution of massive black hole triplets in galactic nuclei – I. Numerical implementation and tests

Author(s): Matteo Bonetti, Francesco Haardt, Alberto Sesana, Enrico Barausse
Published in: Monthly Notices of the Royal Astronomical Society, Issue 461/4, 2016, Page(s) 4419-4434, ISSN 0035-8711
DOI: 10.1093/mnras/stw1590

Cosmic censorship and parametrized spinning black-hole geometries

Author(s): Vitor Cardoso, Leonel Queimada
Published in: General Relativity and Gravitation, Issue 47/12, 2015, ISSN 0001-7701
DOI: 10.1007/s10714-015-1990-5

Testing the black hole ‘no-hair’ hypothesis

Author(s): Vitor Cardoso, Leonardo Gualtieri
Published in: Classical and Quantum Gravity, Issue 33/17, 2016, Page(s) 174001, ISSN 0264-9381
DOI: 10.1088/0264-9381/33/17/174001

Science with the space-based interferometer eLISA: Supermassive black hole binaries

Author(s): Antoine Klein, Enrico Barausse, Alberto Sesana, Antoine Petiteau, Emanuele Berti, Stanislav Babak, Jonathan Gair, Sofiane Aoudia, Ian Hinder, Frank Ohme, Barry Wardell
Published in: Physical Review D, Issue 93/2, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.93.024003

Slowly rotating black holes in Einstein-æther theory

Author(s): Enrico Barausse, Thomas P. Sotiriou, Ian Vega
Published in: Physical Review D, Issue 93/4, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.93.044044

Science with the space-based interferometer eLISA. III: probing the expansion of the universe using gravitational wave standard sirens

Author(s): Nicola Tamanini, Chiara Caprini, Enrico Barausse, Alberto Sesana, Antoine Klein, Antoine Petiteau
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2016/04, 2016, Page(s) 002-002, ISSN 1475-7516
DOI: 10.1088/1475-7516/2016/04/002

Gravity-dominated unequal-mass black hole collisions

Author(s): Ulrich Sperhake, Emanuele Berti, Vitor Cardoso, Frans Pretorius
Published in: Physical Review D, Issue 93/4, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.93.044012

Interacting shells in AdS spacetime and chaos

Author(s): Richard Brito, Vitor Cardoso, Jorge V. Rocha
Published in: Physical Review D, Issue 94/2, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.94.024003

Maxwell perturbations on Kerr–anti–de Sitter black holes: Quasinormal modes, superradiant instabilities, and vector clouds

Author(s): Mengjie Wang, Carlos Herdeiro
Published in: Physical Review D, Issue 93/6, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.93.064066

Interaction between bosonic dark matter and stars

Author(s): Richard Brito, Vitor Cardoso, Caio F. B. Macedo, Hirotada Okawa, Carlos Palenzuela
Published in: Physical Review D, Issue 93/4, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.93.044045

Numerical relativity and high energy physics: Recent developments

Author(s): Emanuele Berti, Vitor Cardoso, Luis C. B. Crispino, Leonardo Gualtieri, Carlos Herdeiro, Ulrich Sperhake
Published in: International Journal of Modern Physics D, Issue 25/09, 2016, Page(s) 1641022, ISSN 0218-2718
DOI: 10.1142/S0218271816410224

Explosion and Final State of an Unstable Reissner-Nordström Black Hole

Author(s): Nicolas Sanchis-Gual, Juan Carlos Degollado, Pedro J. Montero, José A. Font, Carlos Herdeiro
Published in: Physical Review Letters, Issue 116/14, 2016, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.116.141101

Collapsing shells, critical phenomena, and black hole formation

Author(s): Vitor Cardoso, Jorge V. Rocha
Published in: Physical Review D, Issue 93/8, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.93.084034

Black Hole Kicks as New Gravitational Wave Observables

Author(s): Davide Gerosa, Christopher J. Moore
Published in: Physical Review Letters, Issue 117/1, 2016, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.117.011101

THE FINAL SPIN FROM BINARY BLACK HOLES IN QUASI-CIRCULAR ORBITS

Author(s): Fabian Hofmann, Enrico Barausse, Luciano Rezzolla
Published in: The Astrophysical Journal, Issue 825/2, 2016, Page(s) L19, ISSN 2041-8213
DOI: 10.3847/2041-8205/825/2/L19

Numerical simulations of stellar collapse in scalar-tensor theories of gravity

Author(s): Davide Gerosa, Ulrich Sperhake, Christian D Ott
Published in: Classical and Quantum Gravity, Issue 33/13, 2016, Page(s) 135002, ISSN 0264-9381
DOI: 10.1088/0264-9381/33/13/135002

Theory-Agnostic Constraints on Black-Hole Dipole Radiation with Multiband Gravitational-Wave Astrophysics

Author(s): Enrico Barausse, Nicolás Yunes, Katie Chamberlain
Published in: Physical Review Letters, Issue 116/24, 2016, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.116.241104

Einstein–Maxwell–Anti-de-Sitter spinning solitons

Author(s): Carlos Herdeiro, Eugen Radu
Published in: Physics Letters B, Issue 757, 2016, Page(s) 268-274, ISSN 0370-2693
DOI: 10.1016/j.physletb.2016.04.004

Dynamical formation of a Reissner-Nordström black hole with scalar hair in a cavity

Author(s): Nicolas Sanchis-Gual, Juan Carlos Degollado, Carlos Herdeiro, José A. Font, Pedro J. Montero
Published in: Physical Review D, Issue 94/4, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.94.044061

Dimensional reduction in numerical relativity: Modified Cartoon formalism and regularization

Author(s): William G. Cook, Pau Figueras, Markus Kunesch, Ulrich Sperhake, Saran Tunyasuvunakool
Published in: International Journal of Modern Physics D, Issue 25/09, 2016, Page(s) 1641013, ISSN 0218-2718
DOI: 10.1142/S0218271816410133

precession: Dynamics of spinning black-hole binaries with python

Author(s): Davide Gerosa, Michael Kesden
Published in: Physical Review D, Issue 93/12, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.93.124066

Is the Gravitational-Wave Ringdown a Probe of the Event Horizon?

Author(s): Vitor Cardoso, Edgardo Franzin, Paolo Pani
Published in: Physical Review Letters, Issue 116/17, 2016, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.116.171101

Violations of the Kerr and Reissner-Nordström bounds: Horizon versus asymptotic quantities

Author(s): Jorge F. M. Delgado, Carlos A. R. Herdeiro, Eugen Radu
Published in: Physical Review D, Issue 94/2, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.94.024006

Kerr black holes with Proca hair

Author(s): Carlos Herdeiro, Eugen Radu, Helgi Rúnarsson
Published in: Classical and Quantum Gravity, Issue 33/15, 2016, Page(s) 154001, ISSN 0264-9381
DOI: 10.1088/0264-9381/33/15/154001

Chaotic lensing around boson stars and Kerr black holes with scalar hair

Author(s): P. V. P. Cunha, J. Grover, C. Herdeiro, E. Radu, H. Rúnarsson, A. Wittig
Published in: Physical Review D, Issue 94/10, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.94.104023

Astrophysical imaging of Kerr black holes with scalar hair

Author(s): F. H. Vincent, E. Gourgoulhon, C. Herdeiro, E. Radu
Published in: Physical Review D, Issue 94/8, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.94.084045

Gravitational-wave signatures of exotic compact objects and of quantum corrections at the horizon scale

Author(s): Vitor Cardoso, Seth Hopper, Caio F. B. Macedo, Carlos Palenzuela, Paolo Pani
Published in: Physical Review D, Issue 94/8, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.94.084031

Detecting Rotational Superradiance in Fluid Laboratories

Author(s): Vitor Cardoso, Antonin Coutant, Mauricio Richartz, Silke Weinfurtner
Published in: Physical Review Letters, Issue 117/27, 2016, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.117.271101

Extraction of gravitational-wave energy in higher dimensional numerical relativity using the Weyl tensor

Author(s): William G Cook, Ulrich Sperhake
Published in: Classical and Quantum Gravity, Issue 34/3, 2017, Page(s) 035010, ISSN 0264-9381
DOI: 10.1088/1361-6382/aa5294

Effect of cosmological evolution on Solar System constraints and on the scalarization of neutron stars in massless scalar-tensor theories

Author(s): David Anderson, Nicolás Yunes, Enrico Barausse
Published in: Physical Review D, Issue 94/10, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.94.104064

Perturbed black holes in Einstein-dilaton-Gauss-Bonnet gravity: Stability, ringdown, and gravitational-wave emission

Author(s): Jose Luis Blázquez-Salcedo, Caio F. B. Macedo, Vitor Cardoso, Valeria Ferrari, Leonardo Gualtieri, Fech Scen Khoo, Jutta Kunz, Paolo Pani
Published in: Physical Review D, Issue 94/10, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.94.104024

Iron Kα line of boson stars

Author(s): Zheng Cao, Alejandro Cárdenas-Avendaño, Menglei Zhou, Cosimo Bambi, Carlos A.R. Herdeiro, Eugen Radu
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2016/10, 2016, Page(s) 003-003, ISSN 1475-7516
DOI: 10.1088/1475-7516/2016/10/003

Spin evolution of a proto-neutron star

Author(s): Giovanni Camelio, Leonardo Gualtieri, José A. Pons, Valeria Ferrari
Published in: Physical Review D, Issue 94/2, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.94.024008

Static Einstein-Maxwell Black Holes with No Spatial Isometries in AdS Space

Author(s): Carlos A. R. Herdeiro, Eugen Radu
Published in: Physical Review Letters, Issue 117/22, 2016, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.117.221102

Ultra-high-energy cosmic rays and neutrinos from tidal disruptions by massive black holes

Author(s): Claire Guépin, Kumiko Kotera, Enrico Barausse, Ke Fang, Kohta Murase
Published in: Astronomy & Astrophysics, Issue 616, 2018, Page(s) A179, ISSN 0004-6361
DOI: 10.1051/0004-6361/201732392

Science with the TianQin observatory: Preliminary results on testing the no-hair theorem with ringdown signals

Author(s): Changfu Shi, Jiahui Bao, Hai-Tian Wang, Jian-dong Zhang, Yi-Ming Hu, Alberto Sesana, Enrico Barausse, Jianwei Mei, Jun Luo
Published in: Physical Review D, Issue 100/4, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.044036

Characterization of echoes: A Dyson-series representation of individual pulses

Author(s): Miguel R. Correia, Vitor Cardoso
Published in: Physical Review D, Issue 97/8, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.97.084030

Does the black hole shadow probe the event horizon geometry?

Author(s): Pedro V. P. Cunha, Carlos A. R. Herdeiro, Maria J. Rodriguez
Published in: Physical Review D, Issue 97/8, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.97.084020

Spontaneous scalarisation of charged black holes: coupling dependence and dynamical features

Author(s): Pedro G S Fernandes, Carlos A R Herdeiro, Alexandre M Pombo, Eugen Radu, Nicolas Sanchis-Gual
Published in: Classical and Quantum Gravity, Issue 36/13, 2019, Page(s) 134002, ISSN 0264-9381
DOI: 10.1088/1361-6382/ab23a1

Shadows and strong gravitational lensing: a brief review

Author(s): Pedro V. P. Cunha, Carlos A. R. Herdeiro
Published in: General Relativity and Gravitation, Issue 50/4, 2018, ISSN 0001-7701
DOI: 10.1007/s10714-018-2361-9

Black holes, gravitational waves and fundamental physics: a roadmap

Author(s): Leor Barack, Vitor Cardoso, Samaya Nissanke, Thomas P Sotiriou, Abbas Askar, Chris Belczynski, Gianfranco Bertone, Edi Bon, Diego Blas, Richard Brito, Tomasz Bulik, Clare Burrage, Christian T Byrnes, Chiara Caprini, Masha Chernyakova, Piotr Chruściel, Monica Colpi, Valeria Ferrari, Daniele Gaggero, Jonathan Gair, Juan García-Bellido, S F Hassan, Lavinia Heisenberg, Martin Hendry, Ik Siong Heng,
Published in: Classical and Quantum Gravity, Issue 36/14, 2019, Page(s) 143001, ISSN 0264-9381
DOI: 10.1088/1361-6382/ab0587

Constraining the mass of dark photons and axion-like particles through black-hole superradiance

Author(s): Vitor Cardoso, Óscar J.C. Dias, Gavin S. Hartnett, Matthew Middleton, Paolo Pani, Jorge E. Santos
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2018/03, 2018, Page(s) 043-043, ISSN 1475-7516
DOI: 10.1088/1475-7516/2018/03/043

From micro to macro and back: probing near-horizon quantum structures with gravitational waves

Author(s): Andrea Maselli, Paolo Pani, Vitor Cardoso, Tiziano Abdelsalhin, Leonardo Gualtieri, Valeria Ferrari
Published in: Classical and Quantum Gravity, Issue 36/16, 2019, Page(s) 167001, ISSN 0264-9381
DOI: 10.1088/1361-6382/ab30ff

Post-Newtonian evolution of massive black hole triplets in galactic nuclei – II. Survey of the parameter space

Author(s): Matteo Bonetti, Francesco Haardt, Alberto Sesana, Enrico Barausse
Published in: Monthly Notices of the Royal Astronomical Society, Issue 477/3, 2018, Page(s) 3910-3926, ISSN 0035-8711
DOI: 10.1093/mnras/sty896

Black hole spectroscopy: Systematic errors and ringdown energy estimates

Author(s): Vishal Baibhav, Emanuele Berti, Vitor Cardoso, Gaurav Khanna
Published in: Physical Review D, Issue 97/4, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.97.044048

Self-interactions and spontaneous black hole scalarization

Author(s): Caio F. B. Macedo, Jeremy Sakstein, Emanuele Berti, Leonardo Gualtieri, Hector O. Silva, Thomas P. Sotiriou
Published in: Physical Review D, Issue 99/10, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.104041

Spontaneous Scalarization of Black Holes and Compact Stars from a Gauss-Bonnet Coupling

Author(s): Hector O. Silva, Jeremy Sakstein, Leonardo Gualtieri, Thomas P. Sotiriou, Emanuele Berti
Published in: Physical Review Letters, Issue 120/13, 2018, ISSN 0031-9007
DOI: 10.1103/physrevlett.120.131104

Well-posed Cauchy formulation for Einstein-æther theory

Author(s): Olivier Sarbach, Enrico Barausse, Jorge A Preciado-López
Published in: Classical and Quantum Gravity, Issue 36/16, 2019, Page(s) 165007, ISSN 0264-9381
DOI: 10.1088/1361-6382/ab2e13

Post-Newtonian evolution of massive black hole triplets in galactic nuclei – III. A robust lower limit to the nHz stochastic background of gravitational waves

Author(s): Matteo Bonetti, Alberto Sesana, Enrico Barausse, Francesco Haardt
Published in: Monthly Notices of the Royal Astronomical Society, Issue 477/2, 2018, Page(s) 2599-2612, ISSN 0035-8711
DOI: 10.1093/mnras/sty874

Inverse-chirp signals and spontaneous scalarisation with self-interacting potentials in stellar collapse

Author(s): Roxana Rosca-Mead, Christopher J Moore, Michalis Agathos, Ulrich Sperhake
Published in: Classical and Quantum Gravity, Issue 36/13, 2019, Page(s) 134003, ISSN 0264-9381
DOI: 10.1088/1361-6382/ab256f

Spontaneously Scalarized Kerr Black Holes in Extended Scalar-Tensor–Gauss-Bonnet Gravity

Author(s): Pedro V. P. Cunha, Carlos A. R. Herdeiro, Eugen Radu
Published in: Physical Review Letters, Issue 123/1, 2019, ISSN 0031-9007
DOI: 10.1103/physrevlett.123.011101

Evidence for a maximum mass cut-off in the neutron star mass distribution and constraints on the equation of state

Author(s): Justin Alsing, Hector O Silva, Emanuele Berti
Published in: Monthly Notices of the Royal Astronomical Society, Issue 478/1, 2018, Page(s) 1377-1391, ISSN 0035-8711
DOI: 10.1093/mnras/sty1065

Science with the TianQin observatory: Preliminary results on massive black hole binaries

Author(s): Hai-Tian Wang, Zhen Jiang, Alberto Sesana, Enrico Barausse, Shun-Jia Huang, Yi-Fan Wang, Wen-Fan Feng, Yan Wang, Yi-Ming Hu, Jianwei Mei, Jun Luo
Published in: Physical Review D, Issue 100/4, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.043003

Scattering of point particles by black holes: Gravitational radiation

Author(s): Seth Hopper, Vitor Cardoso
Published in: Physical Review D, Issue 97/4, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.97.044031

Black hole scalarization from the breakdown of scale invariance

Author(s): Carlos A. R. Herdeiro, Eugen Radu
Published in: Physical Review D, Issue 99/8, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.084039

Skyrmions around Kerr black holes and spinning BHs with Skyrme hair

Author(s): C. Herdeiro, I. Perapechka, E. Radu, Ya. Shnir
Published in: Journal of High Energy Physics, Issue 2018/10, 2018, ISSN 1029-8479
DOI: 10.1007/jhep10(2018)119

Gravitating solitons and black holes with synchronised hair in the four dimensional O(3) sigma-model

Author(s): C. Herdeiro, I. Perapechka, E. Radu, Ya. Shnir
Published in: Journal of High Energy Physics, Issue 2019/2, 2019, ISSN 1029-8479
DOI: 10.1007/jhep02(2019)111

Physics of black hole binaries: Geodesics, relaxation modes, and energy extraction

Author(s): Laura Bernard, Vitor Cardoso, Taishi Ikeda, Miguel Zilhão
Published in: Physical Review D, Issue 100/4, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.044002

Head-on collisions and orbital mergers of Proca stars

Author(s): Nicolas Sanchis-Gual, Carlos Herdeiro, José A. Font, Eugen Radu, Fabrizio Di Giovanni
Published in: Physical Review D, Issue 99/2, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.024017

Asymptotically flat spinning scalar, Dirac and Proca stars

Author(s): C. Herdeiro, I. Perapechka, E. Radu, Ya. Shnir
Published in: Physics Letters B, Issue 797, 2019, Page(s) 134845, ISSN 0370-2693
DOI: 10.1016/j.physletb.2019.134845

Post-Newtonian evolution of massive black hole triplets in galactic nuclei – IV. Implications for LISA

Author(s): Matteo Bonetti, Alberto Sesana, Francesco Haardt, Enrico Barausse, Monica Colpi
Published in: Monthly Notices of the Royal Astronomical Society, Issue 486/3, 2019, Page(s) 4044-4060, ISSN 0035-8711
DOI: 10.1093/mnras/stz903

Gravitational Magnus effect

Author(s): L. Filipe O. Costa, Rita Franco, Vitor Cardoso
Published in: Physical Review D, Issue 98/2, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.024026

Orbiting black-hole binaries and apparent horizons in higher dimensions

Author(s): William G Cook, Diandian Wang, Ulrich Sperhake
Published in: Classical and Quantum Gravity, Issue 35/23, 2018, Page(s) 235008, ISSN 0264-9381
DOI: 10.1088/1361-6382/aae995

Spinning boson stars and hairy black holes with nonminimal coupling

Author(s): Carlos A. R. Herdeiro, Eugen Radu
Published in: International Journal of Modern Physics D, Issue 27/11, 2018, Page(s) 1843009, ISSN 0218-2718
DOI: 10.1142/s0218271818430095

The stochastic gravitational-wave background in the absence of horizons

Author(s): Enrico Barausse, Richard Brito, Vitor Cardoso, Irina Dvorkin, Paolo Pani
Published in: Classical and Quantum Gravity, Issue 35/20, 2018, Page(s) 20LT01, ISSN 0264-9381
DOI: 10.1088/1361-6382/aae1de

Gravitational wave echoes from black hole area quantization

Author(s): Vitor Cardoso, Valentino F. Foit, Matthew Kleban
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2019/08, 2019, Page(s) 006-006, ISSN 1475-7516
DOI: 10.1088/1475-7516/2019/08/006

Kerr black holes with synchronised scalar hair and higher azimuthal harmonic index

Author(s): Jorge F.M. Delgado, Carlos A.R. Herdeiro, Eugen Radu
Published in: Physics Letters B, Issue 792, 2019, Page(s) 436-444, ISSN 0370-2693
DOI: 10.1016/j.physletb.2019.04.009

A multimessenger study of the Milky Way’s stellar disc and bulge with LISA, Gaia , and LSST

Author(s): Valeriya Korol, Elena M Rossi, Enrico Barausse
Published in: Monthly Notices of the Royal Astronomical Society, Issue 483/4, 2018, Page(s) 5518-5533, ISSN 0035-8711
DOI: 10.1093/mnras/sty3440

Strong cosmic censorship: The nonlinear story

Author(s): Raimon Luna, Miguel Zilhão, Vitor Cardoso, João L. Costa, José Natário
Published in: Physical Review D, Issue 99/6, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.064014

Blasts of Light from Axions

Author(s): Taishi Ikeda, Richard Brito, Vitor Cardoso
Published in: Physical Review Letters, Issue 122/8, 2019, ISSN 0031-9007
DOI: 10.1103/physrevlett.122.081101

Remarks on the maximum luminosity

Author(s): Vitor Cardoso, Taishi Ikeda, Christopher J. Moore, Chul-Moon Yoo
Published in: Physical Review D, Issue 97/8, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.97.084013

Synchronized stationary clouds in a static fluid

Author(s): Carolina L. Benone, Luís C.B. Crispino, Carlos A.R. Herdeiro, Maurício Richartz
Published in: Physics Letters B, Issue 786, 2018, Page(s) 442-447, ISSN 0370-2693
DOI: 10.1016/j.physletb.2018.10.030

Electromagnetism and hidden vector fields in modified gravity theories: Spontaneous and induced vectorization

Author(s): Lorenzo Annulli, Vitor Cardoso, Leonardo Gualtieri
Published in: Physical Review D, Issue 99/4, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.044038

Compact objects and the swampland

Author(s): Carlos A. R. Herdeiro, Eugen Radu, Kunihito Uzawa
Published in: Journal of High Energy Physics, Issue 2019/1, 2019, ISSN 1029-8479
DOI: 10.1007/jhep01(2019)215

Post-Newtonian phase accuracy requirements for stellar black hole binaries with LISA

Author(s): Alberto Mangiagli, Antoine Klein, Alberto Sesana, Enrico Barausse, Monica Colpi
Published in: Physical Review D, Issue 99/6, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.064056

Strong cosmic censorship in charged black-hole spacetimes: Still subtle

Author(s): Vitor Cardoso, João L. Costa, Kyriakos Destounis, Peter Hintz, Aron Jansen
Published in: Physical Review D, Issue 98/10, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.104007

Stability of scalarized black hole solutions in scalar-Gauss-Bonnet gravity

Author(s): Hector O. Silva, Caio F. B. Macedo, Thomas P. Sotiriou, Leonardo Gualtieri, Jeremy Sakstein, Emanuele Berti
Published in: Physical Review D, Issue 99/6, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.064011

Axionic instabilities and new black hole solutions

Author(s): Mateja Bošković, Richard Brito, Vitor Cardoso, Taishi Ikeda, Helvi Witek
Published in: Physical Review D, Issue 99/3, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.035006

Penrose process, superradiance, and ergoregion instabilities

Author(s): Rodrigo Vicente, Vitor Cardoso, Jorge C. Lopes
Published in: Physical Review D, Issue 97/8, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.97.084032

Particle creation in gravitational collapse to a horizonless compact object

Author(s): Tomohiro Harada, Vitor Cardoso, Daiki Miyata
Published in: Physical Review D, Issue 99/4, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.044039

On the inexistence of solitons in Einstein–Maxwell-scalar models

Author(s): Carlos A R Herdeiro, João M S Oliveira
Published in: Classical and Quantum Gravity, Issue 36/10, 2019, Page(s) 105015, ISSN 0264-9381
DOI: 10.1088/1361-6382/ab1859

Scattering of scalar, electromagnetic, and gravitational waves from binary systems

Author(s): Lorenzo Annulli, Laura Bernard, Diego Blas, Vitor Cardoso
Published in: Physical Review D, Issue 98/8, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.084001

Isolated black holes without Z 2 isometry

Author(s): Pedro V. P. Cunha, Carlos A. R. Herdeiro, Eugen Radu
Published in: Physical Review D, Issue 98/10, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.104060

Magnetic tidal Love numbers clarified

Author(s): Paolo Pani, Leonardo Gualtieri, Tiziano Abdelsalhin, Xisco Jiménez-Forteza
Published in: Physical Review D, Issue 98/12, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.124023

Motion in time-periodic backgrounds with applications to ultralight dark matter halos at galactic centers

Author(s): Mateja Bošković, Francisco Duque, Miguel C. Ferreira, Filipe S. Miguel, Vitor Cardoso
Published in: Physical Review D, Issue 98/2, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.024037

Non-perturbative spinning black holes in dynamical Chern–Simons gravity

Author(s): Terence Delsate, Carlos Herdeiro, Eugen Radu
Published in: Physics Letters B, Issue 787, 2018, Page(s) 8-15, ISSN 0370-2693
DOI: 10.1016/j.physletb.2018.09.060

Spontaneous Scalarization of Charged Black Holes

Author(s): Carlos A. R. Herdeiro, Eugen Radu, Nicolas Sanchis-Gual, José A. Font
Published in: Physical Review Letters, Issue 121/10, 2018, ISSN 0031-9007
DOI: 10.1103/physrevlett.121.101102

Black hole binaries: Ergoregions, photon surfaces, wave scattering, and quasinormal modes

Author(s): Thiago Assumpção, Vitor Cardoso, Akihiro Ishibashi, Maurício Richartz, Miguel Zilhão
Published in: Physical Review D, Issue 98/6, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.064036

An analytic effective model for hairy black holes

Author(s): Yves Brihaye, Thomas Delplace, Carlos Herdeiro, Eugen Radu
Published in: Physics Letters B, Issue 782, 2018, Page(s) 124-130, ISSN 0370-2693
DOI: 10.1016/j.physletb.2018.05.018

Testing the nature of dark compact objects: a status report

Author(s): Vitor Cardoso, Paolo Pani
Published in: Living Reviews in Relativity, Issue 22/1, 2019, ISSN 1433-8351
DOI: 10.1007/s41114-019-0020-4

Shadows of exact binary black holes

Author(s): Pedro V. P. Cunha, Carlos A. R. Herdeiro, Maria J. Rodriguez
Published in: Physical Review D, Issue 98/4, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.044053

Wide nutation: binary black-hole spins repeatedly oscillating from full alignment to full anti-alignment

Author(s): Davide Gerosa, Alicia Lima, Emanuele Berti, Ulrich Sperhake, Michael Kesden, Richard O’Shaughnessy
Published in: Classical and Quantum Gravity, Issue 36/10, 2019, Page(s) 105003, ISSN 0264-9381
DOI: 10.1088/1361-6382/ab14ae

Exotic compact object behavior in black hole analogues

Author(s): Carlos A. R. Herdeiro, Nuno M. Santos
Published in: Physical Review D, Issue 99/8, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.084029

Black Holes in an Effective Field Theory Extension of General Relativity

Author(s): Vitor Cardoso, Masashi Kimura, Andrea Maselli, Leonardo Senatore
Published in: Physical Review Letters, Issue 121/25, 2018, ISSN 0031-9007
DOI: 10.1103/physrevlett.121.251105

Convergence of Fourier-domain templates for inspiraling eccentric compact binaries

Author(s): Sashwat Tanay, Antoine Klein, Emanuele Berti, Atsushi Nishizawa
Published in: Physical Review D, Issue 100/6, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.064006

Ultralight boson cloud depletion in binary systems

Author(s): Emanuele Berti, Richard Brito, Caio F. B. Macedo, Guilherme Raposo, João Luís Rosa
Published in: Physical Review D, Issue 99/10, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.104039

Dynamical formation of Proca stars and quasistationary solitonic objects

Author(s): Fabrizio Di Giovanni, Nicolas Sanchis-Gual, Carlos A. R. Herdeiro, José A. Font
Published in: Physical Review D, Issue 98/6, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.064044

Gravitational Waves in Massive Gravity Theories: Waveforms, Fluxes, and Constraints from Extreme-Mass-Ratio Mergers

Author(s): Vitor Cardoso, Gonçalo Castro, Andrea Maselli
Published in: Physical Review Letters, Issue 121/25, 2018, ISSN 0031-9007
DOI: 10.1103/physrevlett.121.251103

Magnetized accretion disks around Kerr black holes with scalar hair: Constant angular momentum disks

Author(s): Sergio Gimeno-Soler, José A. Font, Carlos Herdeiro, Eugen Radu
Published in: Physical Review D, Issue 99/4, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.043002

Constraints on Hořava gravity from binary black hole observations

Author(s): Oscar Ramos, Enrico Barausse
Published in: Physical Review D, Issue 99/2, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.024034

Black holes and binary mergers in scalar Gauss-Bonnet gravity: Scalar field dynamics

Author(s): Helvi Witek, Leonardo Gualtieri, Paolo Pani, Thomas P. Sotiriou
Published in: Physical Review D, Issue 99/6, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.064035

Horizon geometry for Kerr black holes with synchronized hair

Author(s): Jorge F. M. Delgado, Carlos A. R. Herdeiro, Eugen Radu
Published in: Physical Review D, Issue 97/12, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.97.124012

Massive tensor field perturbations on extremal and near-extremal static black holes

Author(s): Vitor Cardoso, Takahisa Igata, Akihiro Ishibashi, Kodai Ueda
Published in: Physical Review D, Issue 100/4, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.044013

Parametrized black hole quasinormal ringdown. II. Coupled equations and quadratic corrections for nonrotating black holes

Author(s): Ryan McManus, Emanuele Berti, Caio F. B. Macedo, Masashi Kimura, Andrea Maselli, Vitor Cardoso
Published in: Physical Review D, Issue 100/4, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.044061

Post-Newtonian spin-tidal couplings for compact binaries

Author(s): Tiziano Abdelsalhin, Leonardo Gualtieri, Paolo Pani
Published in: Physical Review D, Issue 98/10, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.104046

Impact of high-order tidal terms on binary neutron-star waveforms

Author(s): Xisco Jiménez Forteza, Tiziano Abdelsalhin, Paolo Pani, Leonardo Gualtieri
Published in: Physical Review D, Issue 98/12, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.124014

Anisotropic stars as ultracompact objects in general relativity

Author(s): Guilherme Raposo, Paolo Pani, Miguel Bezares, Carlos Palenzuela, Vitor Cardoso
Published in: Physical Review D, Issue 99/10, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.104072

The scalarised Schwarzschild-NUT spacetime

Author(s): Yves Brihaye, Carlos Herdeiro, Eugen Radu
Published in: Physics Letters B, Issue 788, 2019, Page(s) 295-301, ISSN 0370-2693
DOI: 10.1016/j.physletb.2018.11.022

Astrometric effects of gravitational wave backgrounds with non-Einsteinian polarizations

Author(s): Deyan P. Mihaylov, Christopher J. Moore, Jonathan R. Gair, Anthony Lasenby, Gerard Gilmore
Published in: Physical Review D, Issue 97/12, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.97.124058

Dynamical friction in slab geometries and accretion discs

Author(s): Rodrigo Vicente, Vitor Cardoso, Miguel Zilhão
Published in: Monthly Notices of the Royal Astronomical Society, Issue 489/4, 2019, Page(s) 5424-5435, ISSN 0035-8711
DOI: 10.1093/mnras/stz2526

Adiabatic out-of-equilibrium solutions to the Boltzmann equation in warm inflation

Author(s): Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos, João G. Rosa
Published in: Journal of High Energy Physics, Issue 2018/2, 2018, ISSN 1029-8479
DOI: 10.1007/jhep02(2018)063

Nonlinear Dynamics of Spinning Bosonic Stars: Formation and Stability

Author(s): N. Sanchis-Gual, F. Di Giovanni, M. Zilhão, C. Herdeiro, P. Cerdá-Durán, J. A. Font, E. Radu
Published in: Physical Review Letters, Issue 123/22, 2019, ISSN 0031-9007
DOI: 10.1103/physrevlett.123.221101

Dynamical and observational constraints on the warm little inflaton scenario

Author(s): Mar Bastero-Gil, Arjun Berera, Rafael Hernández-Jiménez, João G. Rosa
Published in: Physical Review D, Issue 98/8, 2018, ISSN 2470-0010
DOI: 10.1103/physrevd.98.083502

High-energy collision of black holes in higher dimensions

Author(s): Ulrich Sperhake, William Cook, Diandian Wang
Published in: Physical Review D, Issue 100/10, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.104046

Warm Little Inflaton Becomes Cold Dark Matter

Author(s): João G. Rosa, Luís B. Ventura
Published in: Physical Review Letters, Issue 122/16, 2019, ISSN 0031-9007
DOI: 10.1103/physrevlett.122.161301

Warm inflation within a supersymmetric distributed mass model

Author(s): Mar Bastero-Gil, Arjun Berera, Rafael Hernández-Jiménez, João G. Rosa
Published in: Physical Review D, Issue 99/10, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.99.103520

Distinguishing black holes from horizonless objects through the excitation of resonances during inspiral

Author(s): Vitor Cardoso, Adrián del Río, Masashi Kimura
Published in: Physical Review D, Issue 100/8, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.084046

Neutron star sensitivities in Hořava gravity after GW170817

Author(s): Enrico Barausse
Published in: Physical Review D, Issue 100/8, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.084053

Gravitational-wave detection rates for compact binaries formed in isolation: LIGO/Virgo O3 and beyond

Author(s): Vishal Baibhav, Emanuele Berti, Davide Gerosa, Michela Mapelli, Nicola Giacobbo, Yann Bouffanais, Ugo N. Di Carlo
Published in: Physical Review D, Issue 100/6, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.064060

The role of fluctuation-dissipation dynamics in setting initial conditions for inflation

Author(s): Mar Bastero-Gil, Arjun Berera, Robert Brandenberger, Ian G. Moss, Rudnei O. Ramos, João G. Rosa
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2018/01, 2018, Page(s) 002-002, ISSN 1475-7516
DOI: 10.1088/1475-7516/2018/01/002

Charged black holes with axionic-type couplings: Classes of solutions and dynamical scalarization

Author(s): Pedro G. S. Fernandes, Carlos A. R. Herdeiro, Alexandre M. Pombo, Eugen Radu, Nicolas Sanchis-Gual
Published in: Physical Review D, Issue 100/8, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.084045

Nonspherically Symmetric Collapse in Asymptotically AdS Spacetimes

Author(s): Hans Bantilan, Pau Figueras, Markus Kunesch, Paul Romatschke
Published in: Physical Review Letters, Issue 119/19, 2017, ISSN 0031-9007
DOI: 10.1103/physrevlett.119.191103

Warm Little Inflaton

Author(s): Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos, João G. Rosa
Published in: Physical Review Letters, Issue 117/15, 2016, ISSN 0031-9007
DOI: 10.1103/physrevlett.117.151301

Stimulated Axion Decay in Superradiant Clouds around Primordial Black Holes

Author(s): João G. Rosa, Thomas W. Kephart
Published in: Physical Review Letters, Issue 120/23, 2018, ISSN 0031-9007
DOI: 10.1103/physrevlett.120.231102

Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality

Author(s): D. Astefanesei, C. Herdeiro, A. Pombo, E. Radu
Published in: Journal of High Energy Physics, Issue 2019/10, 2019, ISSN 1029-8479
DOI: 10.1007/jhep10(2019)078

Warm Little Inflaton becomes dark energy

Author(s): João G. Rosa, Luís B. Ventura
Published in: Physics Letters B, Issue 798, 2019, Page(s) 134984, ISSN 0370-2693
DOI: 10.1016/j.physletb.2019.134984

Probing Planckian Corrections at the Horizon Scale with LISA Binaries

Author(s): Andrea Maselli, Paolo Pani, Vitor Cardoso, Tiziano Abdelsalhin, Leonardo Gualtieri, Valeria Ferrari
Published in: Physical Review Letters, Issue 120/8, 2018, ISSN 0031-9007
DOI: 10.1103/physrevlett.120.081101

Testing modified gravity at cosmological distances with LISA standard sirens

Author(s): Enis Belgacem, Gianluca Calcagni, Marco Crisostomi, Charles Dalang, Yves Dirian, Jose María Ezquiaga, Matteo Fasiello, Stefano Foffa, Alexander Ganz, Juan García-Bellido, Lucas Lombriser, Michele Maggiore, Nicola Tamanini, Gianmassimo Tasinato, Miguel Zumalacárregui, Enrico Barausse, Nicola Bartolo, Daniele Bertacca, Antoine Klein, Sabino Matarrese, Mairi Sakellariadou
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2019/07, 2019, Page(s) 024-024, ISSN 1475-7516
DOI: 10.1088/1475-7516/2019/07/024

Gravitational waves and higher dimensions: Love numbers and Kaluza-Klein excitations

Author(s): Vitor Cardoso, Leonardo Gualtieri, Christopher J. Moore
Published in: Physical Review D, Issue 100/12, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.124037

EHT Constraint on the Ultralight Scalar Hair of the M87 Supermassive Black Hole

Author(s): Pedro V. P. Cunha, Carlos A. R. Herdeiro, Eugen Radu
Published in: Universe, Issue 5/12, 2019, Page(s) 220, ISSN 2218-1997
DOI: 10.3390/universe5120220

Charged Dirac perturbations on Reissner-Nordström–anti–de Sitter spacetimes: Quasinormal modes with Robin boundary conditions

Author(s): Mengjie Wang, Carlos Herdeiro, Jiliang Jing
Published in: Physical Review D, Issue 100/12, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.124062

Constraining the Fraction of Binary Black Holes Formed in Isolation and Young Star Clusters with Gravitational-wave Data

Author(s): Yann Bouffanais, Michela Mapelli, Davide Gerosa, Ugo N. Di Carlo, Nicola Giacobbo, Emanuele Berti, Vishal Baibhav
Published in: The Astrophysical Journal, Issue 886/1, 2019, Page(s) 25, ISSN 1538-4357
DOI: 10.3847/1538-4357/ab4a79

A class of solitons in Maxwell-scalar and Einstein–Maxwell-scalar models

Author(s): Carlos A. R. Herdeiro, João M. S. Oliveira, Eugen Radu
Published in: The European Physical Journal C, Issue 80/1, 2020, ISSN 1434-6044
DOI: 10.1140/epjc/s10052-019-7583-9

Can black hole superradiance be induced by galactic plasmas?

Author(s): Joseph P. Conlon, Carlos A.R. Herdeiro
Published in: Physics Letters B, Issue 780, 2018, Page(s) 169-173, ISSN 0370-2693
DOI: 10.1016/j.physletb.2018.02.073

On the inexistence of self-gravitating solitons in generalised axion electrodynamics

Author(s): Carlos A.R. Herdeiro, João M.S. Oliveira
Published in: Physics Letters B, Issue 800, 2020, Page(s) 135076, ISSN 0370-2693
DOI: 10.1016/j.physletb.2019.135076

Black hole formation in relativistic Oscillaton collisions

Author(s): James Y. Widdicombe, Thomas Helfer, Eugene A. Lim
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2020/01, 2020, Page(s) 027-027, ISSN 1475-7516
DOI: 10.1088/1475-7516/2020/01/027

Amplification of superkicks in black-hole binaries through orbital eccentricity

Author(s): Ulrich Sperhake, Roxana Rosca-Mead, Davide Gerosa, Emanuele Berti
Published in: Physical Review D, Issue 101/2, 2020, ISSN 2470-0010
DOI: 10.1103/physrevd.101.024044

Moving black holes: Energy extraction, absorption cross section, and the ring of fire

Author(s): Vitor Cardoso, Rodrigo Vicente
Published in: Physical Review D, Issue 100/8, 2019, ISSN 2470-0010
DOI: 10.1103/physrevd.100.084001

Testing strong-field gravity with tidal Love numbers

Author(s): Vitor Cardoso, Edgardo Franzin, Andrea Maselli, Paolo Pani, Guilherme Raposo
Published in: Physical Review D, Issue 95/8, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.95.084014

Numerical evolutions of spherical Proca stars

Author(s): Nicolas Sanchis-Gual, Carlos Herdeiro, Eugen Radu, Juan Carlos Degollado, Jos? A. Font
Published in: Physical Review D, Issue 95/10, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.95.104028

Shadows of Einstein–dilaton–Gauss–Bonnet black holes

Author(s): Pedro V.P. Cunha, Carlos A.R. Herdeiro, Burkhard Kleihaus, Jutta Kunz, Eugen Radu
Published in: Physics Letters B, Issue 768, 2017, Page(s) 373-379, ISSN 0370-2693
DOI: 10.1016/j.physletb.2017.03.020

Selection bias in dynamically measured supermassive black hole samples: scaling relations and correlations between residuals in semi-analytic galaxy formation models

Author(s): Enrico Barausse, Francesco Shankar, Mariangela Bernardi, Yohan Dubois, Ravi K. Sheth
Published in: Monthly Notices of the Royal Astronomical Society, Issue 468/4, 2017, Page(s) 4782-4791, ISSN 0035-8711
DOI: 10.1093/mnras/stx799

The effect of pair-instability mass loss on black-hole mergers

Author(s): K. Belczynski, A. Heger, W. Gladysz, A. J. Ruiter, S. Woosley, G. Wiktorowicz, H.-Y. Chen, T. Bulik, R. O’Shaughnessy, D. E. Holz, C. L. Fryer, E. Berti
Published in: Astronomy & Astrophysics, Issue 594, 2016, Page(s) A97, ISSN 0004-6361
DOI: 10.1051/0004-6361/201628980

Ultralight scalars and resonances in black-hole physics

Author(s): Ryuichi Fujita, Vitor Cardoso
Published in: Physical Review D, Issue 95/4, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.95.044016

On the equal-mass limit of precessing black-hole binaries

Author(s): Davide Gerosa, Ulrich Sperhake, Jakub Vo?mera
Published in: Classical and Quantum Gravity, Issue 34/6, 2017, Page(s) 064004, ISSN 0264-9381
DOI: 10.1088/1361-6382/aa5e58

Constraining black holes with light boson hair and boson stars using epicyclic frequencies and quasiperiodic oscillations

Author(s): Nicola Franchini, Paolo Pani, Andrea Maselli, Leonardo Gualtieri, Carlos A.?R. Herdeiro, Eugen Radu, Valeria Ferrari
Published in: Physical Review D, Issue 95/12, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.95.124025

Iron K ? line of Kerr black holes with Proca hair

Author(s): Menglei Zhou, Cosimo Bambi, Carlos A.?R. Herdeiro, Eugen Radu
Published in: Physical Review D, Issue 95/10, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.95.104035

Science with the space-based interferometer LISA. V. Extreme mass-ratio inspirals

Author(s): Stanislav Babak, Jonathan Gair, Alberto Sesana, Enrico Barausse, Carlos F. Sopuerta, Christopher P. L. Berry, Emanuele Berti, Pau Amaro-Seoane, Antoine Petiteau, Antoine Klein
Published in: Physical Review D, Issue 95/10, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.95.103012

Astrophysical applications of the post-Tolman-Oppenheimer-Volkoff formalism

Author(s): Kostas Glampedakis, George Pappas, Hector O. Silva, Emanuele Berti
Published in: Physical Review D, Issue 94/4, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.94.044030

Neutron stars in Horndeski gravity

Author(s): Andrea Maselli, Hector O. Silva, Masato Minamitsuji, Emanuele Berti
Published in: Physical Review D, Issue 93/12, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.93.124056

eLISA eccentricity measurements as tracers of binary black hole formation

Author(s): Atsushi Nishizawa, Emanuele Berti, Antoine Klein, Alberto Sesana
Published in: Physical Review D, Issue 94/6, 2016, ISSN 2470-0010
DOI: 10.1103/PhysRevD.94.064020

Constraining stellar binary black hole formation scenarios with eLISA eccentricity measurements

Author(s): Atsushi Nishizawa, Alberto Sesana, Emanuele Berti, Antoine Klein
Published in: Monthly Notices of the Royal Astronomical Society, Issue 465/4, 2016, Page(s) 4375-4380, ISSN 0035-8711
DOI: 10.1093/mnras/stw2993

End Point of the Ultraspinning Instability and Violation of Cosmic Censorship

Author(s): Pau Figueras, Markus Kunesch, Luis Lehner, Saran Tunyasuvunakool
Published in: Physical Review Letters, Issue 118/15, 2017, ISSN 0031-9007
DOI: 10.1103/PhysRevLett.118.151103

Stationary scalar clouds around a BTZ black hole

Author(s): Hugo R.C. Ferreira, Carlos A.R. Herdeiro
Published in: Physics Letters B, Issue 773, 2017, Page(s) 129-134, ISSN 0370-2693
DOI: 10.1016/j.physletb.2017.08.017

Synchronous frequencies of extremal Kerr black holes: Resonances, scattering, and stability

Author(s): Maurício Richartz, Carlos A. R. Herdeiro, Emanuele Berti
Published in: Physical Review D, Issue 96/4, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.044034

Dynamical formation of a hairy black hole in a cavity from the decay of unstable solitons

Author(s): Nicolas Sanchis-Gual, Juan Carlos Degollado, José A Font, Carlos Herdeiro, Eugen Radu
Published in: Classical and Quantum Gravity, Issue 34/16, 2017, Page(s) 165001, ISSN 0264-9381
DOI: 10.1088/1361-6382/aa7d1f

Evolution of a proto-neutron star with a nuclear many-body equation of state: Neutrino luminosity and gravitational wave frequencies

Author(s): Giovanni Camelio, Alessandro Lovato, Leonardo Gualtieri, Omar Benhar, José A. Pons, Valeria Ferrari
Published in: Physical Review D, Issue 96/4, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.043015

The nightmare scenario: measuring the stochastic gravitational wave background from stalling massive black hole binaries with pulsar timing arrays

Author(s): Irina Dvorkin, Enrico Barausse
Published in: Monthly Notices of the Royal Astronomical Society, Issue 470/4, 2017, Page(s) 4547-4556, ISSN 0035-8711
DOI: 10.1093/mnras/stx1454

Superradiance in rotating stars and pulsar-timing constraints on dark photons

Author(s): Vitor Cardoso, Paolo Pani, Tien-Tien Yu
Published in: Physical Review D, Issue 95/12, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.95.124056

Mass ladder operators from spacetime conformal symmetry

Author(s): Vitor Cardoso, Tsuyoshi Houri, Masashi Kimura
Published in: Physical Review D, Issue 96/2, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.024044

Reissner–Nordström black holes with non-Abelian hair

Author(s): Carlos Herdeiro, Vanush Paturyan, Eugen Radu, D.H. Tchrakian
Published in: Physics Letters B, Issue 772, 2017, Page(s) 63-69, ISSN 0370-2693
DOI: 10.1016/j.physletb.2017.06.041

Tests for the existence of black holes through gravitational wave echoes

Author(s): Vitor Cardoso, Paolo Pani
Published in: Nature Astronomy, Issue 1/9, 2017, Page(s) 586-591, ISSN 2397-3366
DOI: 10.1038/s41550-017-0225-y

On the likelihood of detecting gravitational waves from Population III compact object binaries

Author(s): Krzysztof Belczynski, Taeho Ryu, Rosalba Perna, Emanuele Berti, Takamitsu L. Tanaka, Tomasz Bulik
Published in: Monthly Notices of the Royal Astronomical Society, Issue 471/4, 2017, Page(s) 4702-4721, ISSN 0035-8711
DOI: 10.1093/mnras/stx1759

Iron Kα line of Proca stars

Author(s): Tianling Shen, Menglei Zhou, Cosimo Bambi, Carlos A.R. Herdeiro, Eugen Radu
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2017/08, 2017, Page(s) 014-014, ISSN 1475-7516
DOI: 10.1088/1475-7516/2017/08/014

Augmented kludge waveforms for detecting extreme-mass-ratio inspirals

Author(s): Alvin J. K. Chua, Christopher J. Moore, Jonathan R. Gair
Published in: Physical Review D, Issue 96/4, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.044005

Are merging black holes born from stellar collapse or previous mergers?

Author(s): Davide Gerosa, Emanuele Berti
Published in: Physical Review D, Issue 95/12, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.95.124046

Fundamental photon orbits: Black hole shadows and spacetime instabilities

Author(s): Pedro V. P. Cunha, Carlos A. R. Herdeiro, Eugen Radu
Published in: Physical Review D, Issue 96/2, 2017, ISSN 2470-0010
DOI: 10.1103/PhysRevD.96.024039

Gravitational Waves from Single Neutron Stars: An Advanced Detector Era Survey

Author(s): Kostas Glampedakis, Leonardo Gualtieri
Published in: The Physics and Astrophysics of Neutron Stars, Issue 457, 2018, Page(s) 673-736
DOI: 10.1007/978-3-319-97616-7_12

Prospects for observing extreme-mass-ratio inspirals with LISA

Author(s): Jonathan R Gair, Stanislav Babak, Alberto Sesana, Pau Amaro-Seoane, Enrico Barausse, Christopher P L Berry, Emanuele Berti, Carlos Sopuerta
Published in: Journal of Physics: Conference Series, Issue 840, 2017, Page(s) 012021, ISSN 1742-6588
DOI: 10.1088/1742-6596/840/1/012021