6533b7d4fe1ef96bd1262a76

RESEARCH PRODUCT

Maximum mass and stability of differentially rotating neutrons stars

Paweł SzewczykDorota Gondek-rosińskaPablo Cerdá-durán

subject

High Energy Astrophysical Phenomena (astro-ph.HE)FOS: Physical sciencesAstrophysics - High Energy Astrophysical Phenomena

description

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.

http://arxiv.org/abs/2302.06007