Year: 2026
Type: article
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 $t μ\sim 10^4$ (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.
DOI: 10.1103/2vz3-s39r
Institutions: Perimeter Institute, Princeton University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: Innovation, Science and Economic Development Canada, Government of Ontario, Government of Canada, University of Cambridge, Durham University, Alliance de recherche numérique du Canada, Institut Périmètre de physique théorique, Ministry of Colleges and Universities, Institute for Data Intensive Research in Astrophysics and Cosmology, University of Washington, Natural Sciences and Engineering Research Council of Canada, Science and Technology Facilities Council
OpenAlex ID: W7124859370