2003/06/21 by G. Ghisellini
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Gamma-ray bursts and supernovae #Radio Astronomy Observations and Technology #astro-ph
paper · pdf · doi:10.1016/j.newar.2003.12.043
published as New Astron.Rev.48:375-380,2004 · 8 pages, 5 figures. Invited talk at the 2nd Veritas Symposyum: "TeV Astrophysics of extragalactic souces". April 2003, Chicago
arxiv created 2003/06/21 · openalex publication_date 2004/01/30 · arxiv updated 2009/12/01 · openalex created_date 2020/07/02 · openalex updated_date 2026/07/28
TeV emission can be a common characteristic of low power blazars. This is in line with the sequence of blazars relating the observed bolometric luminosity with their overall spectral energy distribution. Detecting new TeV blazars, possibly at different redshifts, is important for studying the particle acceleration process operating in the jet, and it is even more important for studying the far infrared-optical background. Recent studies of low power BL Lacs suggest that the particle acceleration mechanism may be a two-step process, analogous to what is invoked to explain the spectra of gamma-ray bursts. I will briefly discuss these findings, together with a simple scheme for selecting good TeV candidates and I will briefly comment on the very fast TeV and X-ray variability observed in BL Lacs.