A brief review of long-term X-ray and optical variability in radio-quiet AGN
| dc.creator | Uttley, Philip | |
| dc.creator | McHardy, Ian M. | |
| dc.date | 2004-02-17 | |
| dc.date.accessioned | 2026-07-07T10:47:47Z | |
| dc.date.available | 2026-07-07T10:47:47Z | |
| dc.description | Long-time-scale X-ray and optical variability is a key characteristic of AGN. Here, we summarise our current understanding of the X-ray and optical continuum variability of radio-quiet AGN and the relation between the two bands. We demonstrate the strong connection between the X-ray variability properties of AGN and the variability of stellar-mass black hole candidates on much shorter time-scales, and discuss the implications of this result for the origins of the variability. The relationship between optical and X-ray variability is complex, with some AGN showing strong X-ray/optical correlations while others show no obvious correlation. We suggest a possible explanation for this variety of behaviour. | |
| dc.description | 8 pages, invited contribution to the conference 'Stellar mass, Intermediate-mass and Supermassive black holes', October 28-31 2003, Kyoto, Japan (proceedings to be published in Progress of Theoretical Physics) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0402407 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0402407 | |
| dc.identifier | Prog.Theor.Phys.Suppl.155:170-177,2004 | |
| dc.identifier | doi:10.1143/PTPS.155.170 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/183656 | |
| dc.subject | Astrophysics | |
| dc.title | A brief review of long-term X-ray and optical variability in radio-quiet AGN | |
| dc.type | text |