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Kinetic theory of Jeans instability
Physical Review E
Kinetic treatment of the Jeans gravitational instability, with collisions taken into account, is presented. The initial-value problem for the distribution function which obeys the kinetic equation, with the collision integral conserving the number of particles, is solved. Dispersion relation is obtained and analyzed. New modes are found. Collisions are shown not to affect the Jeans instability criterion. Although the instability growth rate diminishes, the collisions they cannot quench thedoi:10.1103/physreve.69.066403 pmid:15244741 fatcat:ivsncemrbbbmvagcxkiwa4c6dq