Hyperons in Neutron Stars

I review the issues related to the appearance of hyperons in neutron star matter, focusing in particular on the problem of the maximum mass supported by hyperonic equations of state. I discuss the general mechanism that leads to the formation of hyperons in the core of neutron stars and I review the...

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Main Author: Domenico Logoteta
Format: Article
Language:English
Published: MDPI AG 2021-10-01
Series:Universe
Subjects:
Online Access:https://www.mdpi.com/2218-1997/7/11/408
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author Domenico Logoteta
author_facet Domenico Logoteta
author_sort Domenico Logoteta
collection DOAJ
description I review the issues related to the appearance of hyperons in neutron star matter, focusing in particular on the problem of the maximum mass supported by hyperonic equations of state. I discuss the general mechanism that leads to the formation of hyperons in the core of neutron stars and I review the main techniques and many-body methods used to construct an appropriate equation of state to describe the strongly interacting system of hadrons hosted in the core of neutron stars. I outline the consequences on the structure and internal composition of neutron stars and also discuss the possible signatures of the presence of hyperons in astrophysical dynamical systems like supernova explosions and binary neutron star mergers. Finally, I briefly report about the possible important role played by hyperons in the transport properties of neutron star matter and on the consequences of neutron star cooling and gravitational wave instabilities induced by the presence of hyperons.
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spelling doaj.art-d498dce342214ec08cfe087e8f77876d2023-11-23T01:50:10ZengMDPI AGUniverse2218-19972021-10-0171140810.3390/universe7110408Hyperons in Neutron StarsDomenico Logoteta0Dipartimento di Fisica, Universita di Pisa, Largo Bruno Pontecorvo 3, I-56127 Pisa, ItalyI review the issues related to the appearance of hyperons in neutron star matter, focusing in particular on the problem of the maximum mass supported by hyperonic equations of state. I discuss the general mechanism that leads to the formation of hyperons in the core of neutron stars and I review the main techniques and many-body methods used to construct an appropriate equation of state to describe the strongly interacting system of hadrons hosted in the core of neutron stars. I outline the consequences on the structure and internal composition of neutron stars and also discuss the possible signatures of the presence of hyperons in astrophysical dynamical systems like supernova explosions and binary neutron star mergers. Finally, I briefly report about the possible important role played by hyperons in the transport properties of neutron star matter and on the consequences of neutron star cooling and gravitational wave instabilities induced by the presence of hyperons.https://www.mdpi.com/2218-1997/7/11/408neutron starshyperonsequation of state
spellingShingle Domenico Logoteta
Hyperons in Neutron Stars
Universe
neutron stars
hyperons
equation of state
title Hyperons in Neutron Stars
title_full Hyperons in Neutron Stars
title_fullStr Hyperons in Neutron Stars
title_full_unstemmed Hyperons in Neutron Stars
title_short Hyperons in Neutron Stars
title_sort hyperons in neutron stars
topic neutron stars
hyperons
equation of state
url https://www.mdpi.com/2218-1997/7/11/408
work_keys_str_mv AT domenicologoteta hyperonsinneutronstars