Coronal heating and emission mechanisms in AGN

Details Coronal heating and emission mechanisms in AGN Coronal heating and emission mechanisms in AGN

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..599...83d&link_type=abstract

X-RAY ASTRONOMY: Stellar Endpoints,AGN, and the Diffuse X-ray Background. Edited by Nicholas E. White, Giuseppe Malaguti, and G

Astronomy and Astrophysics

Astronomy

Galactic Nuclei, Circumnuclear Matter, And Bulges, Radiation Mechanisms, Polarization, X-Ray Sources, X-Ray Bursts, Infall, Accretion, And Accretion Disks

Scientific paper

Popular models for the formation of X-ray spectra in AGN assume that a large fraction of the disk's angular momentum dissipation takes place in a hot corona that carries a small amount of the accreting mass. Here I discuss the formation of a magnetically-structured accretion disk corona, generated by buoyancy instability in the disk and the heating of localized flare regions up to the canonical X-ray emitting temperatures. I also examine the analogy between accreting disk-coronae and ADAFs and discuss the relevant emission mechanism in these two accretion models and how observational constraints can allow us to discriminate between them. .

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