Lourenco, Odilon and Lenzi, Cesar H. and Dutra, Mariana and Frederico, Tobias and Bhuyan, Mrutunjaya and Negreiros, Rodrigo and Flores, Cesar V. and Grams, Guilherme and Menezes, Debora P. (2021) Neutron star cooling and GW170817 constraint within quark-meson coupling models *. Chinese Physics C, 45 (2). ISSN 1674-1137, DOI https://doi.org/10.1088/1674-1137/abca1c.
Full text not available from this repository.Abstract
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.
| Item Type: | Article |
|---|---|
| Funders: | Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) (464898/2014-5), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) (301155.2017-8), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) (310242/2017-7), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) (406958/2018-1), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) (308486/2015-3), Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) (433369/2018-3), Capes-PNPD program (464898/2014-5), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) (464898/2014-5), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) (2013/26258-4), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) (2017/05660-0), Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio De Janeiro (FAPERJ) (E-26/203.299/2017), FOSTECT (FOSTECT.2019B.04), UK Research & Innovation (UKRI) Science & Technology Facilities Council (STFC) (ST/P005314/1), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) (2017/05660-0) |
| Uncontrolled Keywords: | Equation of state; Compact star; Cooling in stars; Quark-meson coupling models; Tidal deformability; Neutron star merger |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 08 Sep 2022 04:18 |
| Last Modified: | 08 Sep 2022 04:18 |
| URI: | http://eprints.um.edu.my/id/eprint/34223 |
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