Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997mnras.292..136p&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 292, p. 136
Astronomy and Astrophysics
Astronomy
101
Accretion Disks, Black Holes (Astronomy), Active Galactic Nuclei, Stellar Evolution, Active Galaxies, Jets
Scientific paper
In a recent paper it was shown that an accretion disk which is irradiated by a central source of radiation can be unstable to becoming warped. In this paper we investigate the growth and nonlinear evolution of such radiation-induced warps, taking self-shadowing by the disk fully into account. We apply the results to accretion disks around massive black holes such as are thought to exist in active galactic nuclei. We show that most of the time the disk configuration is such that the central radiation source is visible only from within two cones of semi-opening angle of about 30 deg at a variable orientation to the outer disk. Furthermore, if jets emanate from the inner disk perpendicular to the local surface, then the calculations indicate that the axis of the jets and the normal to the outer disk are usually severely misaligned.
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