HAL : hal-00728760, version 1
 Code Bibliographique ADS : 2012JPhCS.355a2035N
 International Workshop on Beamed and Unbeamed Gamma-Rays from Galaxies, Muonio : Finland (2011)
 Unbeamed γ-rays from low luminosity AGNs
 (03/2012)
 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.
 équipe(s) de recherche : APC - AHE
 Domaine : Physique/Astrophysique/Cosmologie et astrophysique extra-galactiquePlanète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique
 hal-00728760, version 1 http://hal.archives-ouvertes.fr/hal-00728760 oai:hal.archives-ouvertes.fr:hal-00728760 Contributeur : Volker Beckmann <> Soumis le : Jeudi 6 Septembre 2012, 15:34:53 Dernière modification le : Mardi 11 Septembre 2012, 23:13:48