Clues from microquasars to the origin of radio-loudness of quasars
| dc.creator | Nipoti, Carlo | |
| dc.creator | Blundell, Katherine M. | |
| dc.creator | Binney, James | |
| dc.date | 2006-11-06 | |
| dc.date.accessioned | 2026-07-07T10:24:10Z | |
| dc.date.available | 2026-07-07T10:24:10Z | |
| dc.description | We analysed the long-term variability of four microquasars (GRS 1915+105, Cyg X-1, Cyg X-3, and Sco X-1) in radio and X rays. The results of our analysis indicate the existence of two distinct modes of energy output, which we refer to as the `coupled' mode and the `flaring' mode. The coupled mode is responsible for mildly fluctuating, flat-spectrum radio emission, coupled with the X-ray emission; the flaring mode produces powerful, steep-spectrum radio flares, with no significant counterpart in X rays. We find that the fraction of time spent by a typical microquasar in the flaring mode is similar to the fraction of quasars that are radio-loud. This is consistent with the hypothesis that radio-loudness of quasars is a function of the epoch at which the source is observed. | |
| dc.description | 5 pages, 2 figures. Accepted for publication in the proceedings of the "VI Microquasar Workshop: Microquasars and Beyond" (September 18-22, 2006 Como, Italy). Available from pos.sissa.it | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0611166 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0611166 | |
| dc.identifier | PoSMQW6:087,2006 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/176093 | |
| dc.subject | Astrophysics | |
| dc.title | Clues from microquasars to the origin of radio-loudness of quasars | |
| dc.type | text |