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Effect of the Interaction Between Hyperons on the Moment of Inertia of the Proto Neutron Stars

Effect of the Interaction Between Hyperons on the Moment of Inertia of the Proto Neutron Stars Effect of the interaction between hyperons on the moment of inertia of proto neutron stars (PNSs) PSR J0740+6620, PSR J0348+0432, PSR J1614-2230 and PSR J0737-3039A is examined by means of relativistic mean field theory. Taking into account the interaction between hyperons, the mass M of the PNS decreases with respect to the same radius R, the energy density ε increases with respect to the same pressure p, and the moment of inertia I of the PNS decreases with respect to the same central energy density εc . Under the constraint of the mass of the PNS, considering the interaction between hyperons, the larger the mass of the PNS, the more the radius and moment of inertia of the PNS decrease, while the more energy density and pressure increase. For smaller PNSs, the effect can be negligible. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Astrophysics Springer Journals

Effect of the Interaction Between Hyperons on the Moment of Inertia of the Proto Neutron Stars

Astrophysics , Volume 66 (1) – Mar 1, 2023

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References (40)

Publisher
Springer Journals
Copyright
Copyright © Springer Science+Business Media, LLC, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
0571-7256
eISSN
1573-8191
DOI
10.1007/s10511-023-09772-4
Publisher site
See Article on Publisher Site

Abstract

Effect of the interaction between hyperons on the moment of inertia of proto neutron stars (PNSs) PSR J0740+6620, PSR J0348+0432, PSR J1614-2230 and PSR J0737-3039A is examined by means of relativistic mean field theory. Taking into account the interaction between hyperons, the mass M of the PNS decreases with respect to the same radius R, the energy density ε increases with respect to the same pressure p, and the moment of inertia I of the PNS decreases with respect to the same central energy density εc . Under the constraint of the mass of the PNS, considering the interaction between hyperons, the larger the mass of the PNS, the more the radius and moment of inertia of the PNS decrease, while the more energy density and pressure increase. For smaller PNSs, the effect can be negligible.

Journal

AstrophysicsSpringer Journals

Published: Mar 1, 2023

Keywords: hyperon; relativistic mean field theory; neutron star

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