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Conference Paper

Rapid VHE variability in blazars

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Volpe,  Francesca
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Rieger,  Frank M.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;
European Associated Laboratory for Gamma-Ray Astronomy, jointly supported by CNRS and MPG;

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Citation

Volpe, F., & Rieger, F. M. (2011). Rapid VHE variability in blazars. Proceedings of Science, Texas2010: 023, 1-6.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0012-2EFB-D
Abstract
Active Galactic Nuclei (AGN) are known to show significant variability over a wide frequency range. We review observational results on the variability characteristics of blazars in the very high energy (VHE) domain, focusing on recent findings of rapid VHE variability and evidence for an underlying multiplicative driving process in PKS 2155-304. We explore a physical scenario where the variability is assumed to arise due to accretion disk fluctuations transmitted to the jet, and discuss its implications for the central powerhouse.