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

• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: PARTICLE AND NUCLEAR ASTROPHYSICS AND COSMOLOGY
• 页码范围: 531-547
• 页数: 17页
• 语种: 英文
• DOI: 10.1088/1674-1137/abca1c

摘要

In the present work,we used five different versions of the quark-meson coupling(QMC)model to com-pute astrophysical quantities related to the GW170817 event and the neutron star cooling process.Two of the mod-els 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 GW 170817 constraints with the lowest slope of the symmetry en-ergy exhibits a cooling profile compatible with observational data.