AGN models for the X and gamma-ray backgrounds
| dc.creator | Comastri, Andrea | |
| dc.date | 1998-12-16 | |
| dc.date.accessioned | 2026-07-07T02:29:40Z | |
| dc.date.available | 2026-07-07T02:29:40Z | |
| dc.description | The origin of the X-ray background spectral intensity has been a long standing problem in high energy astrophysics research. Deep X-ray surveys carried out with ROSAT and ASCA combined with the broad band spectral results of Ginga and BeppoSAX satellites strongly support the hypothesis that the bulk of the X-ray background is due to the integrated contribution of discrete sources (mainly AGNs). At higher energies the unexpected findings of the Compton Gamma Ray Observatory indicate that also the gamma-ray background is likely to be due to AGNs. I will discuss AGN--based models for the high energy backgrounds and how future observations will improve our understanding of the X and gamma-ray backgrounds and of the physics and evolution of AGNs. | |
| dc.description | 8 pages, 4 figures. Invited talk presented at the 3rd INTEGRAL Workshop : The Extreme Universe, Taormina 14-18 Sept. 1998 Astrophysical Letters and Communications, in press | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9812307 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9812307 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/13562 | |
| dc.subject | Astrophysics | |
| dc.title | AGN models for the X and gamma-ray backgrounds | |
| dc.type | text |