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Studying the onset of deconfinement with multi-messenger astronomy of neutron stars

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dc.contributor.authorCierniak, M.
dc.contributor.authorBlaschke, D.
dc.date.accessioned2024-11-29T11:36:56Z
dc.date.available2024-11-29T11:36:56Z
dc.date.issued2021
dc.description.abstract© 2021 Wiley-VCH GmbHWith the first multi-messenger observation of a binary neutron star merger (GW170817), new constraints became available for masses and radii of neutron stars. We introduce a class of hybrid EoS that fulfills all these constraints and predicts a region in the mass-radius diagram that could be populated only by hybrid neutron stars with quark matter cores. A confirmation of this conjecture would be provided when the NICER radius measurement for the high-mass pulsar PSR J0740 + 6620 yields a radius significantly less than 11 km. Would this radius measurement yield a result in excess of 12 km, this would allow for both, a purely hadronic and a hybrid nature of this star. In the latter case, the maximum mass could reach 2.6 M⊙ so that the lighter object in the asymmetric binary merger GW190814 could have been a hybrid star. We demonstrate that this high mass can be compatible with an early onset of deconfinement for stars with masses below 1 M⊙ and the occurrence of low-mass twin stars. In such a case, the remnant of GW170817 could be a long-lived hypermassive pulsar.
dc.identifier.citationCierniak, M. Studying the onset of deconfinement with multi-messenger astronomy of neutron stars / Cierniak, M., Blaschke, D. // Astronomische Nachrichten. - 2021. - 10.1002/asna.202113909
dc.identifier.doi10.1002/asna.202113909
dc.identifier.urihttps://www.doi.org/10.1002/asna.202113909
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85100598753&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000615704200001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/23657
dc.relation.ispartofAstronomische Nachrichten
dc.titleStudying the onset of deconfinement with multi-messenger astronomy of neutron stars
dc.typeArticle
dspace.entity.typePublication
relation.isOrgUnitOfPublicationdcdb137c-0528-46a5-841b-780227a67cce
relation.isOrgUnitOfPublication.latestForDiscoverydcdb137c-0528-46a5-841b-780227a67cce
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