The relation between optical and X-ray variability in Seyfert galaxies
| dc.creator | Uttley, P. | |
| dc.date | 2005-01-10 | |
| dc.date.accessioned | 2026-07-07T02:16:41Z | |
| dc.date.available | 2026-07-07T02:16:41Z | |
| dc.description | Studying simultaneous optical and X-ray light curves of radio-quiet AGN can help to probe the relationship between very different physical components - the cool, optically thick disk and hot, optically thin corona. Here, we review the relationship between optical and X-ray variability in Seyfert galaxies, which due to observing constraints was difficult to study for many years, but was given a huge boost with the launch of the RXTE satellite in 1995. We summarise the diverse results of several monitoring campaigns, which pose a challenge for standard theories relating optical and X-ray variability, with sources showing either correlated optical and X-ray flux variations, correlated optical flux and X-ray spectral variations, or no correlation at all. We discuss possible explanations for these results, some of which may be explained using a more standard AGN picture, while others may require additional components, such as the 2-phase accretion flows suggested to explain black hole X-ray binary behaviour. | |
| dc.description | Invited review at conference on "AGN variability from X-ray to radio", Crimea, June 2004; to appear in ASP conference series | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0501157 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0501157 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/8880 | |
| dc.subject | Astrophysics | |
| dc.title | The relation between optical and X-ray variability in Seyfert galaxies | |
| dc.type | text |