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Constraints on masses and spins of black holes in blazars from fast TeV variability
Neronov A., Semikoz D.V., Sibiryakov S.
in High Energy Gamma-Ray Astronomy: Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy - 4th International Meeting on High Energy Gamma-Ray Astronomy, Heidelberg : Germany (2008) - http://hal.in2p3.fr/in2p3-00369630
Physique/Astrophysique/Phénomènes cosmiques de haute energie
Planète et Univers/Astrophysique/Phénomènes cosmiques de haute energie
Constraints on masses and spins of black holes in blazars from fast TeV variability
A. Neronov, D.V. Semikoz1, S. Sibiryakov2
1 :  APC - UMR 7164 - AstroParticule et Cosmologie
http://www.apc.univ-paris7.fr/
CNRS : UMR7164 – IN2P3 – Observatoire de Paris – Université Paris VII - Paris Diderot – CEA : DSM/IRFU
APC - UMR 7164, Université Paris Diderot, 10 rue Alice Domon et Léonie Duquet, case postale 7020, F-75205 Paris Cedex 13
France
2 :  CERN - European Organization for Nuclear Research
http://www.cern.ch
CERN
Suisse
APC - THEORIE
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.

Communications avec actes
12/2008
07/2008
High Energy Gamma-Ray Astronomy: Proceedings of the 4th International Meeting on High Energy Gamma-Ray Astronomy
internationale
1085
Felix A. Aharonian, Werner Hofmann, Frank Rieger.
545-548
American Institute of Physics
American Institute Of Physics Conference Proceedings

4th International Meeting on High Energy Gamma-Ray Astronomy
Heidelberg
Allemagne
07/07/2008
11/07/2008

quasars – black holes – gamma-rays