The nonlinear theory of gravitational instability

Details The nonlinear theory of gravitational instability The nonlinear theory of gravitational instability

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993azh....70...10s&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 70, no. 1, p. 10-15.

Computer Science

Sound

Gravitational Collapse, Nonlinear Equations, Stellar Gravitation, Burger Equation, Galactic Evolution

Scientific paper

Attention is given to the evolution of the velocity field of a gravitationally unstable medium whose particles possess proper thermal motions. It is shown that together with an increase of perturbation amplitude there is a characteristic averaging due to forces of pressure. To describe the nonlinear stage of the instability, a modified Burgers equation with a 'viscosity' coefficient that depends on the sound velocity in the medium and on the instability increment is proposed. Linearization of the equation results in the correct form for the dispersion relationship of the linear theory.

Affiliated with

Also associated with

No associations

Rating

The nonlinear theory of gravitational instability 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 The nonlinear theory of gravitational instability, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The nonlinear theory of gravitational instability will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1273249