Unbeamed γ-rays from low luminosity AGNs
International audience Proton-proton collisions in two-temperature accretion flows may lead to substantial γ-ray emission through neutral pion production and decay. We present preliminary results of our study of such a hadronic γ-ray emission. We find that radiatively inefficient flows around rapidl...
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ftccsdartic:oai:HAL:hal-00728760v1 2023-05-15T17:13:26+02:00 Unbeamed γ-rays from low luminosity AGNs Niedźwiecki, A. Xie, F. Beckmann, V. APC - Astrophysique des Hautes Energies (APC - AHE) AstroParticule et Cosmologie (APC (UMR_7164)) Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna Alma Mater Studiorum Università di Bologna Bologna (UNIBO)-Alma Mater Studiorum Università di Bologna Bologna (UNIBO) Muonio, Finland 2011-04-11 https://hal.archives-ouvertes.fr/hal-00728760 https://doi.org/10.1088/1742-6596/355/1/012035 en eng HAL CCSD IOP Publishing info:eu-repo/semantics/altIdentifier/doi/10.1088/1742-6596/355/1/012035 hal-00728760 https://hal.archives-ouvertes.fr/hal-00728760 BIBCODE: 2012JPhCS.355a2035N doi:10.1088/1742-6596/355/1/012035 ISSN: 1742-6588 EISSN: 1742-6596 Journal of Physics: Conference Series International Workshop on Beamed and Unbeamed Gamma-Rays from Galaxies https://hal.archives-ouvertes.fr/hal-00728760 International Workshop on Beamed and Unbeamed Gamma-Rays from Galaxies, Apr 2011, Muonio, Finland. pp.2035, ⟨10.1088/1742-6596/355/1/012035⟩ [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] info:eu-repo/semantics/conferenceObject Conference papers 2011 ftccsdartic https://doi.org/10.1088/1742-6596/355/1/012035 2021-11-21T04:03:10Z International audience Proton-proton collisions in two-temperature accretion flows may lead to substantial γ-ray emission through neutral pion production and decay. We present preliminary results of our study of such a hadronic γ-ray emission. We find that radiatively inefficient flows around rapidly rotating black holes can produce the MeV/GeV luminosities up to ~ 1044 erg s-1. The hot-flow model predictions for the hadronic and the Comptonization components can put interesting constraints on the properties of the source of high-energy radiation in AGNs. As an example, we compare our model with X/γ-ray observations of Centaurus A and we find that the model with a maximally rotating black hole strongly overpredicts the γ-ray flux. Conference Object Muonio Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Muonio ENVELOPE(23.833,23.833,67.833,67.833) Journal of Physics: Conference Series 355 012035 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] |
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[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] Niedźwiecki, A. Xie, F. Beckmann, V. Unbeamed γ-rays from low luminosity AGNs |
topic_facet |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] |
description |
International audience Proton-proton collisions in two-temperature accretion flows may lead to substantial γ-ray emission through neutral pion production and decay. We present preliminary results of our study of such a hadronic γ-ray emission. We find that radiatively inefficient flows around rapidly rotating black holes can produce the MeV/GeV luminosities up to ~ 1044 erg s-1. The hot-flow model predictions for the hadronic and the Comptonization components can put interesting constraints on the properties of the source of high-energy radiation in AGNs. As an example, we compare our model with X/γ-ray observations of Centaurus A and we find that the model with a maximally rotating black hole strongly overpredicts the γ-ray flux. |
author2 |
APC - Astrophysique des Hautes Energies (APC - AHE) AstroParticule et Cosmologie (APC (UMR_7164)) Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna Alma Mater Studiorum Università di Bologna Bologna (UNIBO)-Alma Mater Studiorum Università di Bologna Bologna (UNIBO) |
format |
Conference Object |
author |
Niedźwiecki, A. Xie, F. Beckmann, V. |
author_facet |
Niedźwiecki, A. Xie, F. Beckmann, V. |
author_sort |
Niedźwiecki, A. |
title |
Unbeamed γ-rays from low luminosity AGNs |
title_short |
Unbeamed γ-rays from low luminosity AGNs |
title_full |
Unbeamed γ-rays from low luminosity AGNs |
title_fullStr |
Unbeamed γ-rays from low luminosity AGNs |
title_full_unstemmed |
Unbeamed γ-rays from low luminosity AGNs |
title_sort |
unbeamed γ-rays from low luminosity agns |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.archives-ouvertes.fr/hal-00728760 https://doi.org/10.1088/1742-6596/355/1/012035 |
op_coverage |
Muonio, Finland |
long_lat |
ENVELOPE(23.833,23.833,67.833,67.833) |
geographic |
Muonio |
geographic_facet |
Muonio |
genre |
Muonio |
genre_facet |
Muonio |
op_source |
ISSN: 1742-6588 EISSN: 1742-6596 Journal of Physics: Conference Series International Workshop on Beamed and Unbeamed Gamma-Rays from Galaxies https://hal.archives-ouvertes.fr/hal-00728760 International Workshop on Beamed and Unbeamed Gamma-Rays from Galaxies, Apr 2011, Muonio, Finland. pp.2035, ⟨10.1088/1742-6596/355/1/012035⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1088/1742-6596/355/1/012035 hal-00728760 https://hal.archives-ouvertes.fr/hal-00728760 BIBCODE: 2012JPhCS.355a2035N doi:10.1088/1742-6596/355/1/012035 |
op_doi |
https://doi.org/10.1088/1742-6596/355/1/012035 |
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Journal of Physics: Conference Series |
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355 |
container_start_page |
012035 |
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1766070556345499648 |