Advances in Research on Theories of the Dark Universe - Inhomogeneity Effects in Relativistic Cosmology | ARTHUS | Project | Results | H2020 | CORDIS

Cosmologie inhomogène et contraintes topologiques

Author(s): Félix de la Salle
Published in: Internship Report, Issue Licence 3 - Paris Saclay, 2023, Page(s) 24
Publisher: University Lyon1

Topology and geometry of Gaussian random fields II: on critical points, excursion sets, and persistent homology

Author(s): Pranav, Pratyush
Published in: Preprint, 2021, Page(s) 29
Publisher: Cornell University library
DOI: 10.48550/arxiv.2109.08721

Estimation of Expected Euler Characteristic Curves of Nonstationary Smooth Gaussian Random Fields

Author(s): Fabian Telschow, Armin Schwartzman, Dan Cheng, Pratyush Pranav
Published in: Preprint, 2019, Page(s) 21
Publisher: Cornell University Library
DOI: 10.48550/arxiv.1908.02493

Alexandrov Theorem for 2+1 flat radiant spacetimes

Author(s): Brunswic, Léo
Published in: Preprint, 2020, Page(s) 56
Publisher: Cornell University Library
DOI: 10.48550/arxiv.2012.01275

Gravitoelectromagnetism and Cosmology

Author(s): Tom Boismard
Published in: Internship Report, Issue Master 2, 2023, Page(s) 29
Publisher: University Lyon1

The Inhomogeneous Radiation Cosmos

Author(s): Shriya Hirve
Published in: Internship Report, Issue Licence 3 - IISER Pune, India, 2019, Page(s) 5
Publisher: École Normale Supérieure

Spherically symmetric solutions of General Relativity: topological constraints on average properties

Author(s): Matthieu Chatelain
Published in: Internship Report, Issue Master 1, 2020, Page(s) 30
Publisher: Ecole Normale Supérieure

Averaging in Newtonian Inhomogeneous Cosmology

Author(s): Rémi Faure
Published in: Internship Report, Issue Master 1, 2019, Page(s) 29
Publisher: University Lyon1

On branched coverings of singular $(G,X)$-manifolds

Author(s): Brunswic, Léo
Published in: Preprint, 2020, Page(s) 35
Publisher: Cornell University Library
DOI: 10.48550/arxiv.2010.10610

Loops abound in the cosmic microwave background: A $4\sigma$ anomaly on super-horizon scales

Author(s): Pranav, Pratyush
Published in: Preprint, 2021, Page(s) 21
Publisher: Cornell University Library
DOI: 10.48550/arxiv.2101.02237

Characterization of an anomaly of the CMB in the standard LCDM model: Alignment of low-order multipoles with the ecliptic plane

Author(s): Clément Richard
Published in: Internship Report, Issue Licence 3, 2019, Page(s) 20
Publisher: University Lyon1

Non-perturbative collapse models for collisionless self-gravitating flows

Author(s): Niels Fardeau
Published in: Internship Report, Issue Master 1, 2022, Page(s) 30
Publisher: University Lyon1

Averaged Inhomogeneous Cosmology: Fit to Supernovae without Dark Energy

Author(s): Célia Desgrange
Published in: Internship Report, Issue Licence 3, 2018, Page(s) 25
Publisher: Université Lyon1

Towards a topological conservation law in averaged Newtonian cosmologies

Author(s): Nathan Cohen
Published in: Internship Report, Issue Licence 3 -EPFL Lausanne, Switzerland, 2020, Page(s) 20
Publisher: Ecole Normale Supérieure

Inhomogeneities and Anisotropies in the Universe analyzed with Supernovae of Type Ia

Author(s): Antonin Borderies
Published in: Internship Report, Issue Master 1, 2021, Page(s) 22
Publisher: University Lyon1

Space Is the Place - How to master spatial average properties of the Universe?

Author(s): Thomas Buchert, Pierre Mourier, Xavier Roy
Published in: Classical and Quantum Gravity Plus, Issue Invited Insight Comment, 2018
Publisher: Institute of Physics Publishing

Backreaction and Virialization: Volume partitioning of inhomogeneous Newtonian cosmologies

Author(s): Alfred Bovon
Published in: Internship Report, Issue Master 2, 2021, Page(s) 31
Publisher: Ecole Normale Supérieure

Globally static and stationary inhomogeneous cosmologies

Author(s): Francesco Sartini
Published in: Internship Report, Issue Master 1, 2018, Page(s) 23
Publisher: École Normale Supérieure

Inhomogeneous Cosmology in Spherical Space

Author(s): Aubin Courty
Published in: Internship Report, Issue Master 1, 2022, Page(s) 30
Publisher: Ecole Normale Supérieure

Anomalies in the topology of the temperature fluctuations in the cosmic microwave background: An analysis of the NPIPE and FFP10 data releases

Author(s): Pratyush Pranav
Published in: Astronomy & Astrophysics, Issue 659, 2022, Page(s) A115, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/202140291

A prediction for anisotropies in the nearby Hubble flow

Author(s): Asta Heinesen, Hayley J. Macpherson
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2022 / 03, 2022, Page(s) 057, ISSN 1475-7516
Publisher: Institute of Physics
DOI: 10.1088/1475-7516/2022/03/057

1 + 3 -Newton-Cartan system and Newton-Cartan cosmology

Author(s): Quentin Vigneron
Published in: Physical Review D, Issue 103/6, 2021, Page(s) 064064, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/physrevd.103.064064

On General-Relativistic Lagrangian Perturbation Theory and Its Non-Perturbative Generalization

Author(s): Thomas Buchert, Ismael Delgado Gaspar, Jan J. Ostrowski
Published in: Universe, Issue 8 / 11, 2022, Page(s) 583, ISSN 2218-1997
Publisher: MDPI
DOI: 10.3390/universe8110583

Persistent homology of the cosmic web – I. Hierarchical topology in ΛCDM cosmologies

Author(s): Georg Wilding, Keimpe Nevenzeel, Rien van de Weygaert, Gert Vegter, Pratyush Pranav, Bernard J T Jones, Konstantinos Efstathiou, Job Feldbrugge
Published in: Monthly Notices of the Royal Astronomical Society, Issue 507/2, 2021, Page(s) 2968-2990, ISSN 0035-8711
Publisher: Blackwell Publishing Inc.
DOI: 10.1093/mnras/stab2326

The quadrupole in the local Hubble parameter: first constraints using Type Ia supernova data and forecasts for future surveys

Author(s): Suhail Dhawan, Antonin Borderies, Hayley J. Macpherson, Asta Heinesen
Published in: Monthly Notices of the Royal Astronomical Society, Issue 519, 2023, Page(s) 4841-4845, ISSN 0035-8711
Publisher: Blackwell Publishing Inc.
DOI: 10.1093/mnras/stac3812

Beyond relativistic Lagrangian perturbation theory: An exact-solution controlled model for structure formation

Author(s): Ismael Delgado Gaspar; Thomas Buchert; Jan J. Ostrowski
Published in: Physical Review D, Issue 107, 2023, Page(s) 024018, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/physrevd.107.024018

Solving the curvature and Hubble parameter inconsistencies through structure formation-induced curvature

Author(s): Asta Heinesen, Thomas Buchert
Published in: Classical and Quantum Gravity, Issue 37/16, 2020, Page(s) 164001, ISSN 0264-9381
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6382/ab954b

Computational Topology for Biomedical Images and Data: Theory and Applications [Book Review]

Author(s): Pratyush Pranav
Published in: IEEE Signal Processing Magazine, Issue 38/4, 2021, Page(s) 130-131, ISSN 1053-5888
Publisher: Institute of Electrical and Electronics Engineers
DOI: 10.1109/msp.2021.3075187

A comparison theorem for cosmological lightcones

Author(s): Mauro Carfora, Francesca Familiari
Published in: Letters in Mathematical Physics, Issue 111/2, 2021, Page(s) id 53, ISSN 0377-9017
Publisher: Kluwer Academic Publishers
DOI: 10.1007/s11005-021-01393-2

The averaging problem on the past null cone in inhomogeneous dust cosmologies

Author(s): Thomas Buchert, Henk van Elst, Asta Heinesen
Published in: General Relativity and Gravitation, Issue 55, 2023, Page(s) 7, ISSN 0001-7701
Publisher: Kluwer Academic Publishers
DOI: 10.1007/s10714-022-03051-x

Redshift drift cosmography for model-independent cosmological inference

Author(s): Asta Heinesen
Published in: Physical Review D, Issue 104/12, 2021, Page(s) 123527, ISSN 1550-2368
Publisher: American Physical Society
DOI: 10.1103/physrevd.104.123527

Minkowski Functionals of SDSS-III BOSS: Hints of Possible Anisotropy in the Density Field?

Author(s): Stephen Appleby, Changbom Park, Pratyush Pranav, Sungwook E. Hong, Ho Seong Hwang, Juhan Kim, Thomas Buchert
Published in: The Astrophysical Journal, Issue 928, 2022, Page(s) 108, ISSN 1538-4357
Publisher: Institute of Physics Publishing
DOI: 10.3847/1538-4357/ac562a

Is backreaction in cosmology a relativistic effect? On the need for an extension of Newton's theory to non-Euclidean topologies

Author(s): Quentin Vigneron
Published in: Physical Review D, Issue 105/04, 2022, Page(s) 043524, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/physrevd.105.043524

Hydrodynamic interpretation of generic squeezed coherent states: A kinetic theory

Author(s): Nezihe Uzun
Published in: Annals of Physics, Issue 442, 2022, Page(s) 168900, ISSN 0003-4916
Publisher: Academic Press
DOI: 10.1016/j.aop.2022.168900

Cauchy-compact flat spacetimes with extreme BTZ

Author(s): Léo Brunswic
Published in: Geometriae Dedicata, Issue 214/1, 2021, Page(s) 571-608, ISSN 0046-5755
Publisher: Kluwer Academic Publishers
DOI: 10.1007/s10711-021-00629-8

Redshift drift in a universe with structure: Lemaître-Tolman-Bondi structures with arbitrary angle of entry of light

Author(s): Sofie Marie Koksbang, Asta Heinesen
Published in: Physical Review D, Issue 106, 2022, Page(s) 043501, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/physrevd.106.043501

Lagrangian theory of structure formation in relativistic cosmology. VI. Comparison with Szekeres exact solutions

Author(s): Ismael Delgado Gaspar, Thomas Buchert
Published in: Physical Review D, Issue 103/2, 2021, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/physrevd.103.023513

Cosmological homogeneity scale estimates are dressed

Author(s): Asta Heinesen
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2020/10, 2020, Page(s) 052-052, ISSN 1475-7516
Publisher: Institute of Physics
DOI: 10.1088/1475-7516/2020/10/052

The variance of the CMB temperature gradient: a new signature of a multiply connected Universe

Author(s): Ralf Aurich, Thomas Buchert, Martin J. France, Frank Steiner
Published in: Classical and Quantum Gravity, Issue 38/22, 2021, Page(s) 225005, ISSN 0264-9381
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6382/ac27f0

Is the observable Universe consistent with the cosmological principle?

Author(s): Pavan Kumar Aluri, et al., Pratyush Pranav, et al.
Published in: Classical and Quantum Gravity, Issue 40 / 9, 2023, Page(s) 094001, ISSN 0264-9381
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6382/acbefc

Redshift drift as a model independent probe of dark energy

Author(s): Asta Heinesen
Published in: Physical Review D, Issue 103/8, 2021, Page(s) L081302, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/physrevd.103.l081302

Multipole decomposition of the general luminosity distance Hubble law — a new framework for observational cosmology

Author(s): Asta Heinesen
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2021/05, 2021, Page(s) 008, ISSN 1475-7516
Publisher: Institute of Physics
DOI: 10.1088/1475-7516/2021/05/008

Cosmology intertwined: A review of the particle physics, astrophysics, and cosmology associated with the cosmological tensions and anomalies

Author(s): Elcio Abdalla, ..., Thomas Buchert, ..., Asta Heinesen, ... et al.
Published in: Journal of High Energy Astrophysics, Issue 34, 2022, Page(s) 49-211, ISSN 2214-4048
Publisher: Elsevier BV
DOI: 10.1016/j.jheap.2022.04.002

On Backreaction in Newtonian cosmology

Author(s): Thomas Buchert
Published in: Monthly Notices of the Royal Astronomical Society: Letters, Issue 473/1, 2017, Page(s) L46-L49, ISSN 1745-3933
Publisher: Blackwell Publishing
DOI: 10.1093/mnrasl/slx160

Lagrangian theory of structure formation in relativistic cosmology. IV. Lagrangian approach to gravitational waves

Author(s): Fosca Al Roumi, Thomas Buchert, Alexander Wiegand
Published in: Physical Review D, Issue 96/12, 2017, Page(s) 123538, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/PhysRevD.96.123538

Lagrangian theory of structure formation in relativistic cosmology. V. Irrotational fluids

Author(s): Yong-Zhuang Li, Pierre Mourier, Thomas Buchert, David L. Wiltshire
Published in: Physical Review D, Issue 98/4, 2018, Page(s) 28, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/PhysRevD.98.043507

Cosmological backreaction and its dependence on spacetime foliation

Author(s): Thomas Buchert, Pierre Mourier, Xavier Roy
Published in: Classical and Quantum Gravity, Issue 35/24, 2018, Page(s) 24LT02, ISSN 0264-9381
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6382/aaebce

Topology and geometry of Gaussian random fields I: on Betti numbers, Euler characteristic, and Minkowski functionals

Author(s): Pratyush Pranav, Rien van de Weygaert, Gert Vegter, Bernard J T Jones, Robert J Adler, Job Feldbrugge, Changbom Park, Thomas Buchert, Michael Kerber
Published in: Monthly Notices of the Royal Astronomical Society, Issue 485/3, 2019, Page(s) 4167-4208, ISSN 0035-8711
Publisher: Blackwell Publishing Inc.
DOI: 10.1093/mnras/stz541

On the covariance of scalar averaging and backreaction in relativistic inhomogeneous cosmology

Author(s): Asta Heinesen, Pierre Mourier, Thomas Buchert
Published in: Classical and Quantum Gravity, Issue 36/7, 2019, Page(s) 075001, ISSN 0264-9381
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6382/ab0618

Environment dependence of the growth of the most massive objects in the Universe

Author(s): Krzysztof Bolejko, Jan J. Ostrowski
Published in: Physical Review D, Issue 99/12, 2019, Page(s) 9, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/PhysRevD.99.124036

Unexpected topology of the temperature fluctuations in the cosmic microwave background

Author(s): Pratyush Pranav, Robert J. Adler, Thomas Buchert, Herbert Edelsbrunner, Bernard J. T. Jones, Armin Schwartzman, Hubert Wagner, Rien van de Weygaert
Published in: Astronomy & Astrophysics, Issue 627, 2019, Page(s) A163, ISSN 0004-6361
Publisher: Springer Verlag
DOI: 10.1051/0004-6361/201834916

Dark matter from backreaction? Collapse models on galaxy cluster scales

Author(s): Quentin Vigneron, Thomas Buchert
Published in: Classical and Quantum Gravity, Issue 36/17, 2019, Page(s) 175006, ISSN 0264-9381
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6382/ab32d1

Dynamical spatial curvature as a fit to Type Ia supernovae

Author(s): Célia Desgrange, Asta Heinesen, Thomas Buchert
Published in: International Journal of Modern Physics D, Issue 28/11, 2019, Page(s) 1950143, ISSN 0218-2718
Publisher: World Scientific Publishing Co
DOI: 10.1142/s0218271819501438

Stochastic homology of Gaussian vs. non-Gaussian random fields: graphs towards Betti numbers and persistence diagrams

Author(s): Job Feldbrugge, Matti van Engelen, Rien van de Weygaert, Pratyush Pranav, Gert Vegter
Published in: Journal of Cosmology and Astroparticle Physics, Issue 2019/09, 2019, Page(s) 052-052, ISSN 1475-7516
Publisher: Institute of Physics
DOI: 10.1088/1475-7516/2019/09/052

Editorial note to: On the Newtonian limit of Einstein’s theory of gravitation (by Jürgen Ehlers)

Author(s): Thomas Buchert, Thomas Mädler
Published in: General Relativity and Gravitation, Issue 51/12, 2019, Page(s) 162, ISSN 0001-7701
Publisher: Kluwer Academic Publishers
DOI: 10.1007/s10714-019-2623-1

On average properties of inhomogeneous fluids in general relativity III: general fluid cosmologies

Author(s): Thomas Buchert, Pierre Mourier, Xavier Roy
Published in: General Relativity and Gravitation, Issue 52/3, 2020, Page(s) 27, ISSN 0001-7701
Publisher: Kluwer Academic Publishers
DOI: 10.1007/s10714-020-02670-6

Channels for streaming instability in dusty discs

Author(s): Etienne Jaupart, Guillaume Laibe
Published in: Monthly Notices of the Royal Astronomical Society, Issue 492/4, 2020, Page(s) 4591-4598, ISSN 0035-8711
Publisher: Blackwell Publishing Inc.
DOI: 10.1093/mnras/staa057

Reduced phase space optics for general relativity: symplectic ray bundle transfer

Author(s): Nezihe Uzun
Published in: Classical and Quantum Gravity, Issue 37/4, 2020, Page(s) 045002, ISSN 0264-9381
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6382/ab60b5

1 + 3 formulation of Newton’s equations

Author(s): Quentin Vigneron
Published in: Physical Review D, Issue 102/12, 2020, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/physrevd.102.124005

Luminosity distance and anisotropic sky-sampling at low redshifts: A numerical relativity study

Author(s): Hayley J. Macpherson, Asta Heinesen
Published in: Physical Review D, Issue 104/2, 2021, Page(s) 023525, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/physrevd.104.023525

Gauss–Bonnet–Chern approach to the averaged Universe

Author(s): Léo Brunswic, Thomas Buchert
Published in: Classical and Quantum Gravity, Issue 37/21, 2020, Page(s) 215022, ISSN 0264-9381
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6382/abae45

The Hawking energy on the past lightcone in cosmology

Author(s): Dennis Stock
Published in: Classical and Quantum Gravity, Issue 37/21, 2020, Page(s) 215005, ISSN 0264-9381
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6382/aba182

Nonperturbative collapse models for collisionless self-gravitating flows

Author(s): Niels Fardeau, Thomas Buchert, Fosca Al Roumi, Fereshteh Felegary
Published in: Physical Review D, Issue 108, 2023, Page(s) 083502, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/physrevd.108.083502

Reconciling a decelerating Universe with cosmological observations

Author(s): Asta Heinesen
Published in: Physical Review D, Issue 107, 2023, Page(s) L101301, ISSN 2470-0010
Publisher: American Physical Society
DOI: 10.1103/physrevd.107.l101301

Einstein Constraints and Ricci Flow - A Geometrical Averaging of Initial Data Sets

Author(s): Mauro Carfora, Annalisa Marzuoli
Published in: Mathematical Physics Studies, 2023, Page(s) XII, 173, ISBN 978-981-19-8539-3
Publisher: Springer Nature
DOI: 10.1007/978-981-19-8540-9

4MOST Consortium Survey 8: Cosmology Redshift Survey (CRS)

Author(s): J. Richard, J.-P. Kneib, C. Blake, A. Raichoor, J. Comparat, T. Shanks, J. Sorce, M. Sahlén, C. Howlett, E. Tempel, R. McMahon, M. Bilicki, B. Roukema, J. Loveday, D. Pryer, T. Buchert, C. Zhao (for the CRS team)
Published in: The Messenger, Issue 175/3, 2019, Page(s) 50-53
Publisher: ESO
DOI: 10.18727/0722-6691/5127

A Few Numbers from the Turnaround Epoch of Collapse

Author(s): J.J. Ostrowski
Published in: Acta Physica Polonica B Proceedings Supplement, Issue 13/2, 2020, Page(s) 177, ISSN 1899-2358
Publisher: Jagellonian University
DOI: 10.5506/aphyspolbsupp.13.177

Is Dark Energy Simulated by Structure Formation in the Universe ?

Author(s): Thomas Buchert
Published in: Proceedings of 2nd World Summit: Exploring the Dark Side of the Universe — PoS(EDSU2018), Issue 335, 2018, Page(s) 038
Publisher: Sissa Medialab
DOI: 10.22323/1.335.0038

Inhomogeneous Relativistic Cosmology : nonperturbative models and spatial averaging of the Einstein equations

Author(s): Mourier, Pierre
Published in: Cosmology and Extragalactic Astrophysics, Issue tel-02299373, 2019, Page(s) 198 pages
Publisher: HAL open archive

Influence of topology in inhomogeneous cosmology through non-Euclidean extensions of Newton’s theory and relativistic numerical schemes

Author(s): Quentin Vigneron
Published in: Cosmology and Extragalactic Astrophysics, Issue tel-03481716, 2021, Page(s) 188 pages
Publisher: HAL open archive

Cosmic microwave background properties in a universe with simply or multiply connected topology

Author(s): Martin France
Published in: Cosmology and Extragalactic Astrophysics, Issue tel-03908491, 2023, Page(s) 144 pages
Publisher: HAL open archive

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