Spanning the full range of neutron star properties within a microscopic description

Detalhes bibliográficos
Autor(a) principal: Malik, Tuhin
Data de Publicação: 2023
Outros Autores: Ferreira, Márcio, Albino, Milena Bastos, Providência, Constança
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Texto Completo: https://hdl.handle.net/10316/113298
https://doi.org/10.1103/PhysRevD.107.103018
Resumo: There are 17 pages, 16 figures (The typographical error in the supplemental update)
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spelling Spanning the full range of neutron star properties within a microscopic descriptionNuclear Theoryastro-ph.HEThere are 17 pages, 16 figures (The typographical error in the supplemental update)The high-density behavior of nuclear matter is analyzed within a relativistic mean-field description with non-linear meson interactions. To assess the model parameters and their output, a Bayesian inference technique is used. The Bayesian setup is limited only by a few nuclear saturation properties, the neutron star maximum mass larger than 2 M$_\odot$, and the low-density pure neutron matter equation of state (EOS) produced by an accurate N$^3$LO calculation in chiral effective field theory. Depending on the strength of the non-linear scalar vector field contribution, we have found three distinct classes of EOSs, each one correlated to different star properties distributions. If the non-linear vector field contribution is absent, the gravitational maximum mass and the sound velocity at high densities are the greatest. However, it also gives the smallest speed of sound at densities below three times saturation density. On the other hand, models with the strongest non-linear vector field contribution predict the largest radii and tidal deformabilities for 1.4 M$_\odot$ stars, together with the smallest mass for the onset of the nucleonic direct Urca processes and the smallest central baryonic densities for the maximum mass configuration. These models have the largest speed of sound below three times saturation density, but the smallest at high densities, in particular, above four times saturation density the speed of sound decreases approaching approximately $\sqrt{0.4}c$ at the center of the maximum mass star. On the contrary, a weak non-linear vector contribution gives a monotonically increasing speed of sound. A 2.75 M$_\odot$ NS maximum mass was obtained in the tail of the posterior with a weak non-linear vector field interaction. We found that pQCD favors models with a large non-linear vector field contribution or hyperons.American Physical Society2023-01-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://hdl.handle.net/10316/113298https://hdl.handle.net/10316/113298https://doi.org/10.1103/PhysRevD.107.103018eng2470-00102470-0029http://arxiv.org/abs/2301.08169v4Malik, TuhinFerreira, MárcioAlbino, Milena BastosProvidência, Constançainfo:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2024-07-08T16:07:03Zoai:estudogeral.uc.pt:10316/113298Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T06:05:51.628369Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Spanning the full range of neutron star properties within a microscopic description
title Spanning the full range of neutron star properties within a microscopic description
spellingShingle Spanning the full range of neutron star properties within a microscopic description
Malik, Tuhin
Nuclear Theory
astro-ph.HE
title_short Spanning the full range of neutron star properties within a microscopic description
title_full Spanning the full range of neutron star properties within a microscopic description
title_fullStr Spanning the full range of neutron star properties within a microscopic description
title_full_unstemmed Spanning the full range of neutron star properties within a microscopic description
title_sort Spanning the full range of neutron star properties within a microscopic description
author Malik, Tuhin
author_facet Malik, Tuhin
Ferreira, Márcio
Albino, Milena Bastos
Providência, Constança
author_role author
author2 Ferreira, Márcio
Albino, Milena Bastos
Providência, Constança
author2_role author
author
author
dc.contributor.author.fl_str_mv Malik, Tuhin
Ferreira, Márcio
Albino, Milena Bastos
Providência, Constança
dc.subject.por.fl_str_mv Nuclear Theory
astro-ph.HE
topic Nuclear Theory
astro-ph.HE
description There are 17 pages, 16 figures (The typographical error in the supplemental update)
publishDate 2023
dc.date.none.fl_str_mv 2023-01-19
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/10316/113298
https://hdl.handle.net/10316/113298
https://doi.org/10.1103/PhysRevD.107.103018
url https://hdl.handle.net/10316/113298
https://doi.org/10.1103/PhysRevD.107.103018
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2470-0010
2470-0029
http://arxiv.org/abs/2301.08169v4
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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