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arXiv · 2608.20764

Slow uniform rotation reduces the critical adiabatic exponent for the stability of gaseous stars

Yucong Wang
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Abstract

We prove that any sufficiently slow uniform rotation stabilizes the supermassive star under axi-symmetric perturbations, and the stability persists for every adiabatic exponent in a left neighborhood of the mass-critical one. The key new ingredient of the linear analysis is a structural property of the self-similar family inherited from the mass-critical scaling: the associated self-similar direction becomes a reduced kernel direction of a modified linearized operator.

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Yucong Wang. 2026-08-21. Slow uniform rotation reduces the critical adiabatic exponent for the stability of gaseous stars. https://arxiv.org/abs/2608.20764

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