2016/09/14 by F. Tavecchio
Physics and Astronomy · #Acceleration #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Blazar #Cherenkov radiation #Dark Matter and Cosmic Phenomena #Energy spectrum #Fermi Gamma-ray Space Telescope #Field (mathematics) #Galaxy #Gamma ray #Nuclear physics #Optics #Particle acceleration #Physics #Plasma #Quasar #Radio Astronomy Observations and Technology #astro-ph.HE
paper · pdf · doi:10.1063/1.4968892
12 pages, invited talk at "Gamma2016", Heidelberg July 11-15, 2016, to be published in a special volume of the AIP Conference Proceedings
arxiv created 2016/09/14 · openalex publication_date 2017/01/01 · arxiv updated 2017/08/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Blazars are high-energy engines providing us natural laboratories to study particle acceleration, relativistic plasma processes, magnetic field dynamics, black hole physics. Key informations are provided by observations at high-energy (in particular by Fermi/LAT) and very-high energy (by Cherenkov telescopes). I give a short account of the current status of the field, with particular emphasis on the theoretical challenges connected to the observed ultra-fast variability events and to the emission of flat spectrum radio quasars in the very high energy band.