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arXiv · 2302.06007

Maximum mass and stability of differentially rotating neutrons stars

Paweł Szewczyk·Dorota Gondek-Rosińska·Pablo Cerdá-Durán
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Abstract

We present our study of stability of differentially rotating, axisymmetric neutron stars described by a polytropic equation of state with $\Gamma = 2$. We focus on quasi-toroidal solutions with a degree of differential rotation $\widetilde A=1$. Our results show that for a wide range of parameters hypermassive, quasi-toroidal neutron stars are dynamically stable against quasi-radial perturbations, which may have implications for newly born neutron stars and binary neutron stars mergers.

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Paweł Szewczyk, Dorota Gondek-Rosińska, Pablo Cerdá-Durán. 2023-02-12. Maximum mass and stability of differentially rotating neutrons stars. https://doi.org/10.5506/aphyspolbsupp.16.6-a8

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