Physics Letters B ( IF 4.3 ) Pub Date : 2021-05-04 , DOI: 10.1016/j.physletb.2021.136330 Grigoris Panotopoulos , Takol Tangphati , Ayan Banerjee , M.K. Jasim
In the present paper, we treat the problem of the existence of quark stars (QSs) for selected homogeneous and unpaired charge-neutral 3-flavor interacting quark matter with corrections equations of state (EoS). Using the EoS combined with the Tolmann-Oppenheimer-Volkoff (TOV) structure equations, the properties of stars are explored by obtaining their mass-radius relations. All calculations are carried out within the framework of the R-squared gravity defined by . Our main goal is to discuss the effect for a wide range of the R-squared gravity parameter, a, on the mass-radius and the mass-central mass density relation of QSs. Furthermore, we investigate the dynamical stability condition for those stars, and we show that their dynamical stability depends on the anisotropic parameters and coming from the respective EoS. In such a scenario our results provide circumstantial evidence in favor of super-massive pulsars.
中文翻译:
R 2重力下的各向异性夸克星
在本文中,我们处理了选择的均质且不成对的电荷中性3味相互作用夸克物质的夸克星(QSs)存在的问题。 校正状态方程(EoS)。通过结合EoS和Tolmann-Oppenheimer-Volkoff(TOV)结构方程,通过获得恒星的质量半径关系来探索恒星的特性。所有计算均在由以下公式定义的R平方引力的框架内进行。我们的主要目标是讨论大范围的R平方重力参数a对质量半径和质量中心质量密度的影响QSs的关系。此外,我们研究了这些恒星的动力稳定性条件,并表明它们的动力稳定性取决于各向异性参数 和 来自各自的EoS。在这种情况下,我们的结果提供了支持超级大质量脉冲星的间接证据。