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Neutron star cooling and GW170817 constraint within quark-meson coupling models

Chinese physics C 2021年第2期45卷 531-547页

作者： Odilon Lourenço César H.Lenzi Mariana Dutra Tobias Frederico M.Bhuyan Rodrigo Negreiros César V.Flores Guilherme Grams Débora p.Menezes Departamento de Física Instituto Tecnológico de AeronáuticaDCTA12228-900São Josédos CamposSPBrazil Department of physics Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia Atomic Molecular and Optical Research Group Advanced Institute of Materials ScienceTon Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Applied Sciences Ton Duc Thang UniversityHo Chi Minh CityVietnam Instituto de Física Universidade Federal Fluminense 20420NiteróiRJBrazil Centro de Ciências Exatas Naturais e TecnológicasUEMASULRua Godofredo Viana 1300Centro CEP:65901-480ImperatrizMaranhãoBrazil Departamento de Física Universidade Federal de Santa CatarinaFlorianópolisSCCP 476CEP 88.040-900Brazil Univ.Lyon Univ.Claude Bernard Lyon 1CNRS/IN2P3IP2I LyonUMR 5822F-69622VilleurbanneFrance

In the present work,we used five different versions of the quark-meson coupling(QMC)model to compute astrophysical quantities related to the GW170817 event and the neutron star cooling *** of the models are based on the original bag potential structure and three versions consider a harmonic oscillator potential to confine *** bag-like models also incorporate the pasta phase used to describe the inner crust of neutron *** a simple method studied in the present work,we show that the pasta phase does not play a significant ***,the QMC model that satisfies the GW170817 constraints with the lowest slope of the symmetry energy exhibits a cooling profile compatible with observational data.

关键词： equation of state compact star cooling in stars quark-meson coupling models tidal deformability neutron star merger

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Neutron star cooling and GW170817 constraint within quark-meson coupling models

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Chinese physics C 2021年第2期45卷 535-551页

作者： Odilon Louren?o César H.Lenzi Mariana Dutra Tobias Frederico M.Bhuyan Rodrigo Negreiros César V.Flores Guilherme Grams Débora p.Menezes Departamento de Física Instituto Tecnológico de Aeronáutica DCTA Department of physics Faculty of Science University of Malaya Atomic Molecular and Optical Research Group Advanced Institute of Materials Science Ton Duc Thang University Faculty of Applied Sciences Ton Duc Thang University Instituto de Física Universidade Federal Fluminense 20420 Centro de Ciências Exatas Naturais e Tecnológicas UEMASUL Departamento de Física Universidade Federal de Santa Catarina FlorianópolisSC Univ.Lyon Univ.Claude Bernard Lyon 1

In the present work, we used five different versions of the quark-meson coupling(QMC) model to compute astrophysical quantities related to the GW170817 event and the neutron star cooling process. Two of the models are based on the original bag potential structure and three versions consider a harmonic oscillator potential to confine quarks. The bag-like models also incorporate the pasta phase used to describe the inner crust of neutron stars. With a simple method studied in the present work, we show that the pasta phase does not play a significant role. Moreover, the QMC model that satisfies the GW170817 constraints with the lowest slope of the symmetry energy exhibits a cooling profile compatible with observational data.

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