The weakly nonlinear theory of density waves in a stellar disk

Evgeny Griv, Tzihong Chiueh and William Peter

Physica A: Statistical Mechanics and its Applications, 1994, vol. 205, issue 1, 299-306

Abstract: Quasilinear theory is applied to the adiabatic wave-star interaction of a differentially-rotating stellar disk of a galaxy. Under the influence of growing spiral waves the velocity dispersion of stars increases and the surface mass density becomes more peaked. The resulting distortion in phase space leads to a decrease in the growth rate of the waves, and as the result the Jeans instability should end after a few rotations of the system. The theory is confirmed by N-body computer simulations.

Date: 1994
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:205:y:1994:i:1:p:299-306

DOI: 10.1016/0378-4371(94)90507-X

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