Assessing the stability of ultracompact spinning boson stars with nonlinear evolutions
arXiv:2508.11527 · doi:10.1103/2vz3-s39r
Abstract
We reinvestigate the stability properties of ultracompact spinning boson stars with a stable light ring using fully nonlinear 3+1 and 2+1 numerical relativity simulations and two different formulations of the Einstein equations. We find no evidence of an instability on timescales of (in units of the scalar mass), when allowing the star to be perturbed either solely by discretization error or by imposing various types of perturbations to our initial data. We find that the initially imposed perturbations exhibit slow decay, even for magnitudes just below the order where immediate collapse is induced.
arXiv comment13 pages, 8 figures, updated to match published version
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