Neutron star cooling and GW170817 constraint within quark-meson coupling models *
نویسندگان
چکیده
Abstract In the present work, we used five different versions of quark-meson coupling (QMC) model to compute astrophysical quantities related GW170817 event and neutron star cooling process. Two models are based on original bag potential structure three consider a harmonic oscillator confine quarks. The bag-like also incorporate pasta phase describe inner crust stars. With simple method studied in show that does not play significant role. Moreover, QMC satisfies constraints with lowest slope symmetry energy exhibits profile compatible observational data.
منابع مشابه
A Quark-meson Coupling Model for Nuclear and Neutron Matter
An explicit quark model, based on a mean eld description of non-overlapping nucleon bags bound by the self-consistent exchange of , ! and mesons, is used to investigate the properties of both nuclear and neutron matter. We establish a clear understanding of the relationship between this model, which incorporates the internal structure of the nucleon, and QHD. Finally, we use the model to study ...
متن کاملNeutron star matter in the quark-meson coupling model in strong magnetic fields
P. Yue and H. Shen Department of Physics, Nankai University, Tianjin 300071, China Abstract The effects of strong magnetic fields on neutron star matter are investigated in the quark-meson coupling (QMC) model. The QMC model describes a nuclear many-body system as nonoverlapping MIT bags in which quarks interact through self-consistent exchange of scalar and vector mesons in the mean-field appr...
متن کاملNeutron Star Cooling
Observation of cooling neutron stars can potentially provide information about the states of matter at supernuclear densities. We review physical properties important for cooling such as neutrino emission processes and superfluidity in the stellar interior, surface envelopes of light elements due to accretion of matter and strong surface magnetic fields. The neutrino processes include the modif...
متن کاملPhotoproduction of hypernuclei within the quark-meson coupling model
We study the photoproduction of the 12 ΛB hypernucleus within a fully covariant effective Lagrangian based model, employing Λ bound state spinors derived from the latest quark-meson coupling model. The kaon production vertex is described via creation, propagation and decay of N(1650), N(1710), and N(1720) intermediate baryonic resonant states in the initial collision of the photon with a target...
متن کاملOn the Progenitor of Binary Neutron Star Merger GW170817
On 2017 August 17 the merger of two compact objects with masses consistent with two neutron stars was discovered through gravitational-wave (GW170817), gamma-ray (GRB170817A), and optical (SSS17a/AT 2017gfo) observations. The optical source was associated with the early-type galaxy NGC 4993 at a distance of just ∼40 Mpc, consistent with the gravitational-wave measurement, and the merger was lo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Chinese Physics C
سال: 2021
ISSN: ['1674-1137', '2058-6132']
DOI: https://doi.org/10.1088/1674-1137/abca1c