Intermittency, Accretion Disks and AGN Evolution

Details Intermittency, Accretion Disks and AGN Evolution Intermittency, Accretion Disks and AGN Evolution

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004mas..conf..351s&link_type=abstract

MULTIWAVELENGTH AGN SURVEYS. Proceedings of the Guillermo Haro Conference 2003. Held 8-12 December 2003 in Cozumel, Mexico. Edit

Astronomy and Astrophysics

Astronomy

Scientific paper

There is growing evidence that AGN activity could be intermittent. We propose a scenario in which the accretion onto a supermassive black hole (SMBH) is unstable. The ionization instability in the accretion disk causes repetitive outbursts of activity followed by quiescence when the accretion flow becomes inefficient and the innermost parts of the disk evaporate. We calculate the evolution of the disk and provide characteristic timescales for the AGN activity.

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