2011/04/20 by Francesca Volpe, Volpe, Francesca, Frank Rieger +2
Computer Science · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Radio Astronomy Observations and Technology #astro-ph.HE
paper · pdf · doi:10.48550/arxiv.1104.4088
6 pages, 3 figures. Accepted to the Proceedings of the 25th Texas Symposium on Relativistic Astrophysics (Heidelberg, 2010)
arxiv created 2011/04/20 · openalex publication_date 2011/04/20 · arxiv updated 2011/04/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.