| Thème(s) : |
 |
|
|
| Titre : |
|
Constraints on masses and spins of black holes in blazars from fast TeV variability |
|
| Auteur : |
|
A. Neronov, D.V. Semikoz1, S. Sibiryakov2 |
|
| Laboratoire : |
|
|
|
| équipe(s) de recherche : |
|
APC - THEORIE |
| Résumé : |
|
We discuss a "compact source'' model of very high energy (VHE) emission from blazars in which the variability time is determined by the blazar central engine. In this model electron or proton acceleration close to the supermassive black hole is followed by the development of electromagnetic cascade in a radiatively inefficient accretion flow. Assuming such a model for the TeV blazar PKS 2155-304, we show that the variability properties of the TeV ?-ray signal observed during a bright flare from this source, such as the minimal variability time scale and the recurrence period of the sub-flares, constrain the mass and the angular momentum of the supermassive black hole. |
|
|
| Type de publication : |
|
Communications avec actes |
|
Date de publication
ou d'écriture : |
|
12/2008 |
|
| Date de la présentation : |
|
07/2008 |
|
Nom du périodique
Titre de l'ouvrage : |
|
High Energy Gamma-Ray Astronomy: Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy |
|
| Audience : |
|
internationale |
|
| Volume : |
|
1085 |
|
| Editeurs scientifiques : |
|
Felix A. Aharonian, Werner Hofmann, Frank Rieger. |
|
| Page/Article : |
|
545-548 |
|
| Editeur : |
|
American Institute of Physics |
|
| Collection : |
|
American Institute Of Physics Conference Proceedings |
|
|
| Nom du colloque : |
|
4th International Meeting on High Energy Gamma-Ray Astronomy |
|
| Ville du colloque : |
|
Heidelberg |
|
| Pays du colloque : |
|
Allemagne |
|
| Date du colloque (début) : |
|
07/07/2008 |
|
| Date du colloque (fin) : |
|
11/07/2008 |
|
|
| Mot(s)-clé(s) : |
|
quasars – black holes – gamma-rays |
|
Récupérer au format
