Statistics – Computation
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993pasj...45..113m&link_type=abstract
PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 45, no. 1, p. 113-118.
Statistics
Computation
8
Accretion Disks, Irradiation, Thermal Stability, Astronomical Models, Computational Astrophysics, Optical Thickness, Radiation Pressure
Scientific paper
The effects of external heating on the stability of hot accretion disks are studied in some detail. It is known that geometrically thin, optically thick, nonirradiated accretion disks have two distinct branches in the surface density mass-accretion rate plane: the upper branch is radiation pressure-dominated and is unstable against thermal and secular perturbations, while the lower one is gas-pressure-dominated and is stable. We show quite generally that, even when disks are strongly irradiated, the upper branch remains unstable and the lower branch remains stable; the lower branch, however, can become radiation pressure dominated, if the irradiating flux, F(irr), is kept constant. A stable, radiation pressure dominated state thus appears. If F(irr) changes in proportion to the mass-accretion rate through the disk, the instabilities associated with radiation pressure dominated disks cannot be removed. Some observational implications are discussed in the context of long-term variations of low-mass X-ray binaries.
Kusunose Masaaki
Mineshige Shin
No associations
LandOfFree
On the stability of irradiated accretion disks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the stability of irradiated accretion disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the stability of irradiated accretion disks will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1276356