A Brief Review of Long-Term X-Ray and Optical Variability in Radio-Quiet AGN | Zendy

Philip Uttley | Zendy; Ian M. M | Zendy; Hardy Hardy | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

A Brief Review of Long-Term X-Ray and Optical Variability in Radio-Quiet AGN

Author(s) -

Philip Uttley,

Ian M. M,

Hardy Hardy

Publication year - 2004

Publication title -

progress of theoretical physics supplement

Language(s) - English

Resource type - Journals

ISSN - 0375-9687

DOI - 10.1143/ptps.155.170

Subject(s) - quiet , astrophysics , physics , quasar , astronomy , galaxy

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 continuumvariability of radio-quiet AGN and the relation between the two bands. Wedemonstrate the strong connection between the X-ray variability properties ofAGN and the variability of stellar-mass black hole candidates on much shortertime-scales, and discuss the implications of this result for the origins of thevariability. The relationship between optical and X-ray variability is complex,with some AGN showing strong X-ray/optical correlations while others show noobvious correlation. We suggest a possible explanation for this variety ofbehaviour.Comment: 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

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research