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Measuring parameters of active galactic nuclei central engines with very high energy γ-ray flares

Neronov, A. ; Semikoz, D. ; Sibiryakov, S.

In: Monthly Notices of the Royal Astronomical Society, 2008, vol. 391, no. 2, p. 949-958

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    Titre
    • Measuring parameters of active galactic nuclei central engines with very high energy γ-ray flares
    Auteur
    • Neronov, A.. INTEGRAL Science Data Center, Chemin d'Écogia 16, 1290 Versoix, Switzerland
    • Semikoz, D.. APC, 10, rue Alice Domon et Leonie Duquet, 75205 Paris, France
    • Sibiryakov, S.. Institute for Nuclear Research of the Russian Academy of Sciences, 60th October Anniversary prospect 7a, Moscow 117312, Russia
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • Monthly Notices of the Royal Astronomical Society, 2008, vol. 391, no. 2, p. 949-958. Blackwell Publishing Ltd
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:295599
    Summary
    We discuss a ‘compact source' model of very high energy 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 γ-ray signal observed during a bright flare from this source, such as the minimal variability time-scale and the recurrence period of the subflares, constrain the mass and the angular momentum of the supermassive black hole