Project description
Study to throw light on the physics of relativistic jets
Relativistic jets are powerful jets of radiation and particles travelling close to the speed of light, most of which have been observationally associated with black holes. They are amongst the most powerful manifestations of the energy released by compact objects. Despite their importance for multi-messenger astronomy, astroparticle physics and galaxy evolution, their physics is not fully understood. Funded by the Marie Skłodowska-Curie Actions programme, the RASPO project aims to develop models describing the energy distribution of the radiating particles. Researchers will conduct fully kinetic simulations (rather than making ad hoc assumptions) and fit these models to the non-thermal spectra of jets associated with active galactic nuclei and gamma ray bursts.
Objective
"Relativistic jets from Active Galactic Nuclei (AGN) and Gamma Ray Bursts (GRBs) have fascinated astronomers for decades. Despite its importance for multi-messenger astronomy, astroparticle physics, and galaxy evolution, the physics of relativistic jets is not fully understood. According to a widely accepted paradigm, relativistic jets extract the rotational energy of the black hole via electromagnetic stresses, and transport it out to large distances in the form of Poynting flux. However, we do not understand how the Poynting flux is converted into the non-thermal radiation that we observe. Since relativistic jets have huge Reynolds numbers, turbulence could naturally dissipate the magnetic energy and accelerate a population of non-thermal particles, which emit the observed radiation via synchrotron and inverse Compton cooling. Developing concrete jet emission models based on such scenario has recently become possible due to the advent of large-scale fully kinetic simulations of magnetically dominated plasma turbulence. A crucial finding of these simulations is that particles have a strong pitch angle anisotropy (namely, particles move nearly along the direction of the local magnetic field), contrary to the textbook (and ad hoc) assumption that the radiating particles in relativistic jets are isotropic. I propose a project aiming to investigate ""non-thermal Radiation from AStrophysical jets: from theory of Plasma turbulence to Observations"" (RASPO). In this project, I will develop models for the pitch angle and energy distribution of the radiating particles that rely on fully kinetic simulations (rather than ad hoc assumptions), and fit these model to the non-thermal spectra of AGN and GRB jets. I will study the apparent contradiction between fitting of non-thermal spectra with existing isotropic models, which suggest that the emission region is matter dominated, and theoretical expectations, which suggest that jets should be instead magnetically dominated objects."
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
MAIN PROGRAMME
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2021-PF-01
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
00136 ROMA
Italy
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.