TY  - INPR
A1  - Musolino, Carlo
A1  - Ecker, Christian
A1  - Rezzolla, Luciano
T1  - On the maximum mass and oblateness of rotating neutron stars with generic equations of state
T2  - arXiv
N2  - A considerable effort has been dedicated recently to the construction of generic equations of state (EOSs) for matter in neutron stars. The advantage of these approaches is that they can provide model-independent information on the interior structure and global properties of neutron stars. Making use of more than 106 generic EOSs, we asses the validity of quasi-universal relations of neutron star properties for a broad range of rotation rates, from slow-rotation up to the mass-shedding limit. In this way, we are able to determine with unprecedented accuracy the quasi-universal maximum-mass ratio between rotating and nonrotating stars and reveal the existence of a new relation for the surface oblateness, i.e., the ratio between the polar and equatorial proper radii. We discuss the impact that our findings have on the imminent detection of new binary neutron-star mergers and how they can be used to set new and more stringent limits on the maximum mass of nonrotating neutron stars, as well as to improve the modelling of the X-ray emission from the surface of rotating stars.
Y1  - 2023
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/83876
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-838766
UR  - https://arxiv.org/abs/2307.03225v1
IS  - 2307.03225 Version 1
PB  - arXiv
ER  -