Implications of very rapid TeV variability in blazars

We discuss the implications of rapid (few-minute) variability in the TeV flux of blazars, which has been observed recently with the HESS and MAGIC telescopes. The variability time-scales seen in PKS 2155−304 and Mrk 501 are much shorter than inferred light-crossing times at the black hole horizon, s...

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Bibliographic Details

Published in:	Monthly notices of the Royal Astronomical Society. Letters Vol. 384; no. 1; pp. L19 - L23
Main Authors:	Begelman, Mitchell C., Fabian, Andrew C., Rees, Martin J.
Format:	Journal Article
Language:	English
Published:	Oxford, UK Blackwell Science Ltd 01.02.2008 Blackwell Publishing Ltd
Subjects:	accretion accretion discs accretion, accretion discs BL Lacertae objects: individual: Mrk 501 BL Lacertae objects: individual: PKS 2155−304 galaxies: active galaxies: jets gamma-rays: observations
ISSN:	1745-3925, 1745-3933
Online Access:	Get full text
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