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Measuring parameters of active galactic nuclei central engines with very high energy γ-ray flares
Neronov A., Semikoz D.V., Sibiryakov S.
Monthly Notices of the Royal Astronomical Society 391 (2008) 949-958 - http://hal.in2p3.fr/in2p3-00294723
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique
Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique
Measuring parameters of active galactic nuclei central engines with very high energy γ-ray flares
A. Neronov, D.V. Semikoz1, 2, 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 :  Institute for Nuclear Research of the Russian Academy of Sciences
Russian Academy of Science
Russie, Fédération De
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 gamma-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.

Articles dans des revues avec comité de lecture
12/2008
Monthly Notices of the Royal Astronomical Society
Publisher Oxford University Press (OUP): Policy P - Oxford Open Option A
ISSN 0035-8711 (eISSN : 1365-8711)
391
949-958

11 pages, 3 figures
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/0806.2545