dc.contributor.author | Kundu, Sayan | |
dc.contributor.author | Vaidya, Bhargav | |
dc.contributor.author | Mignone, Andrea | |
dc.contributor.author | Hardcastle, Martin J. | |
dc.date.accessioned | 2023-09-20T09:30:01Z | |
dc.date.available | 2023-09-20T09:30:01Z | |
dc.date.issued | 2022-11-17 | |
dc.identifier.citation | Kundu , S , Vaidya , B , Mignone , A & Hardcastle , M J 2022 , ' A numerical study of the interplay between Fermi acceleration mechanisms in radio lobes of FR-II radio galaxies ' , Astronomy & Astrophysics , vol. 667 , no. November 2022 , A138 , pp. 1-15 . https://doi.org/10.1051/0004-6361/202244251 | |
dc.identifier.issn | 0004-6361 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/2208.12823v1 | |
dc.identifier.other | ORCID: /0000-0003-4223-1117/work/142860073 | |
dc.identifier.uri | http://hdl.handle.net/2299/26700 | |
dc.description | ©2022 S. Kundu et al. published by EDP Sciences. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/ | |
dc.description.abstract | Context: Radio-loud AGNs are thought to possess various sites of particle acceleration, which gives rise to the observed non-thermal spectra. Stochastic turbulent acceleration (STA) and diffusive shock acceleration (DSA) are commonly cited as potential sources of high-energy particles in weakly magnetized environments. Together, these acceleration processes and various radiative losses determine the emission characteristics of these extra-galactic radio sources. Aims: The purpose of this research is to investigate the dynamical interplay between the STA and DSA in the radio lobes of FR-II radio galaxies, as well as the manner in which these acceleration mechanisms, along with a variety of radiative losses, collectively shape the emission features seen in these extra-galactic sources. Methods: A phenomenologically motivated model of STA is considered and subsequently employed on a magneto-hydrodynamically simulated radio lobe through a novel hybrid Eulerian-Lagrangian framework. Results: STA gives rise to a curved particle spectrum that is morphologically different from the usual shock-accelerated spectrum. As a consequence of this structural difference in the underlying particle energy spectrum, various multi-wavelength features arise in the spectral energy distribution of the radio lobe. Additionally, we observe enhanced diffuse X-ray emission from radio lobes for cases where STA is taken into account in addition to DSA. | en |
dc.format.extent | 15 | |
dc.format.extent | 2646444 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy & Astrophysics | |
dc.subject | astro-ph.HE | |
dc.title | A numerical study of the interplay between Fermi acceleration mechanisms in radio lobes of FR-II radio galaxies | en |
dc.contributor.institution | Department of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1051/0004-6361/202244251 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |