Authors: Tao Luo Zhouping Xin Huihui Zeng
Publish Date: 2016/09/17
Volume: 347, Issue: 3, Pages: 657-702
Abstract
The nonlinear asymptotic stability of LaneEmden solutions is proved in this paper for spherically symmetric motions of viscous gaseous stars with the density dependent shear and bulk viscosities which vanish at the vacuum when the adiabatic exponent gamma lies in the stability regime 4/3 2 by establishing the globalintime regularity uniformly up to the vacuum boundary for the vacuum free boundary problem of the compressible NavierStokesPoisson systems with spherical symmetry which ensures the global existence of strong solutions capturing the precise physical behavior that the sound speed is C1/2Hölder continuous across the vacuum boundary the large time asymptotic uniform convergence of the evolving vacuum boundary density and velocity to those of LaneEmden solutions with detailed convergence rates and the detailed large time behavior of solutions near the vacuum boundary Those uniform convergence are of fundamental importance in the study of vacuum free boundary problems which are missing in the previous results for global weak solutions Moreover the results obtained in this paper apply to much broader cases of viscosities than those in Fang and Zhang Arch Ration Mech Anal 191195–243 2009 for the theory of weak solutions when the adiabatic exponent gamma lies in the most physically relevant range Finally this paper extends the previous localintime theory for strong solutions to a globalintime one
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