Feb 9, 1999
Instabilities in Accretion Disks
Dr. Jean-Marie Hameury, ITP & Obs-Strasbourg
I discuss the thermal-viscous instability that is thought to be
responsible for the outbursts of dwarf novae in cataclysmic binaries
and soft X-ray transients in low-mass X-ray binaries, and that
could be present in young stellar objects as well as AGNs. I show that
the illumination of the disk and of the companion star, as well as changes
in the outer disk radius must be included in the models if one wishes
to extract meaningful physical information on e.g. viscosity from
the comparison of predicted and observed lightcurves.
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