Self-Similar Viscous Collapse of a Self-Gravitating, Polytropic Gas Disk

Details Self-Similar Viscous Collapse of a Self-Gravitating, Polytropic Gas Disk Self-Similar Viscous Collapse of a Self-Gravitating, Polytropic Gas Disk

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997pasj...49..439m&link_type=abstract

Publications of the Astronomical Society of Japan, v.49, p.439-443.

Astronomy and Astrophysics

Astronomy

2

Accretion Disks, Black Holes, Quasars, Stars: Formation

Scientific paper

Self-similar solutions for the time evolution of polytropic, self-gravitating viscous disks is found on the condition that the kinematic viscosity is nu ~ r({l} and the gas pressure is P ~ rho (Gamma ) , where l and Gamma are free parameters, r is radius, and rho is density. This solution describes a self-similar collapse of a rotating gas disk via self-gravity and viscosity. For Gamma < Gc = (3+2l)/(3+l) global accretion solutions exist, provided that 0 < l <= 1. Owing to the boundary condition of no radial velocity at the origin, mass is accumulated near to the center, giving rise to a strong central concentration; the surface density varies as Sigma ~ r(-1-(2)/(3)l) . In the outer portions, in contrast, the surface density more slowly decreases outward as Sigma ~ r(-Gamma /(2-Gamma )) . For Gamma > Gc , conversely, no global accretion solution is found.

Affiliated with

Also associated with

No associations

Rating

Self-Similar Viscous Collapse of a Self-Gravitating, Polytropic Gas Disk 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 Self-Similar Viscous Collapse of a Self-Gravitating, Polytropic Gas Disk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-Similar Viscous Collapse of a Self-Gravitating, Polytropic Gas Disk will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-807600