A Brief Review of Long-Term X-Ray and Optical Variability in Radio-Quiet AGN(Session 5 : Evidence for Giant Black Holes)

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概要

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• 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 radioquiet 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.

• 2004-11-15

著者

• UTTLEY Philip

  School of Physics and Astronomy, University of Southampton:Laboratory for High Energy Astrophysics, Code 662, NASA Goddard Space Flight Center

• McHardy Ian

  School of Physics and Astronomy, University of Southampton

関連論文

• A Brief Review of Long-Term X-Ray and Optical Variability in Radio-Quiet AGN(Session 5 : Evidence for Giant Black Holes)

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