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Astron. Astrophys. 327, 57-60

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Analytical calculations of the radial structure of self-gravitating and magnetized accretion disks in AGN

Ye Lu, Lantian Yang, and Shaoping Wu

Physics Department and Institute of Astrophysics, Huazhong Normal University, Wuhan, 430070, P.R. China

Received 25 July 1996 / Accepted 18 June 1997


The variation with radius of the physical parameters(scale height, central temperature, and central density) of a self-gravitation and magnetized accretion disk is examined.We have adopted the different opacities in different regions as in the work by Collin-Souffrin and Dumont(1990II), and we consider a disc model with a FORMULA black hole at the center and with an accretion rate of 0.01FORMULA/yr. Most of our results are very similar to theirs, but there are some differences between ours and theirs, that is: the critical radius where X-rays are able to heat significantly the disc is not sensitive to self-gravitation. However, self-gravitation has an influence on the location of the radius which emits the bulk of UV radiation, and the magnetic field affects both of them.

Key words: accretion disks - galaxies: active - galaxies: nuclei

© European Southern Observatory (ESO) 1997

Online publication: October 1, 1997
Last change: April 8, 1998