On the origin of optical microvariability and X ray flickering in active galactic nuclei

Details On the origin of optical microvariability and X ray flickering in active galactic nuclei On the origin of optical microvariability and X ray flickering in active galactic nuclei

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990oomx.book.....c&link_type=abstract

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Astronomy and Astrophysics

Astrophysics

Accretion Disks, Active Galactic Nuclei, Flicker, Optical Properties, X Rays, Astrophysics, Origins

Scientific paper

We suggest that non-stationary spiral shocks can produce X-ray flickering and optical microvariability. We show this by detailed non-axisymmetric numerical simulation of accretion disks in a binary system. We show that non-axisymmetric features appear and disappear in time scales of order of few local orbital periods near the inner edge of the disk and shorter than the orbital periods at a large distance. The former type may explain the X-ray flickering and the later type, the optical microvariability.

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