High Energy Emission from AGN and Unified Schemes

dc.creatorPadovani, Paolo
dc.date1999-01-11
dc.date.accessioned2026-07-07T02:29:57Z
dc.date.available2026-07-07T02:29:57Z
dc.descriptionActive Galactic Nuclei (AGN) are now known to be strong gamma-ray emitters. After briefly describing AGN classification and the main ideas behind unified schemes, I summarize the main properties of blazars (that is BL Lacs and flat-spectrum radio quasars) and their connection with relativistic beaming. Finally, I address the question of why blazars, despite being extreme and very rare objects, are the only AGN detected at high (E > 100 MeV) energies, and touch upon the relevance of TeV astronomy for AGN research.
dc.description12 pages, 2 figures. Invited talk at the Vulcano Workshop "Frontier Objects in Astrophysics and Particle Physics", to appear in the proceedings. Postscript file also available at http://icarus.stsci.edu/~padovani/unif_papers.html
dc.identifierhttps://arxiv.org/abs/astro-ph/9901130
dc.identifierhttp://arxiv.org/abs/astro-ph/9901130
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/13668
dc.subjectAstrophysics
dc.titleHigh Energy Emission from AGN and Unified Schemes
dc.typetext

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