Constraining bag constant for hybrid neutron stars

被引：8
作者：
Rather, Ishfaq A. [1 ]
Kumar, Ankit [2 ,3 ]
Das, H. C. [2 ,3 ]
Imran, M. [1 ]
Usmani, A. A. [1 ]
Patra, S. K. [2 ,3 ]
机构：
[1] Aligarh Muslim Univ, Dept Phys, Aligarh 202002, Uttar Pradesh, India
[2] Inst Phys, Bhubaneswar 751005, India
[3] Homi Bhabha Natl Inst, Training Sch Complex, Mumbai 400085, Maharashtra, India
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS E | 2020年 / 29卷 / 07期
关键词：
Equation of state; bag constant; hybrid stars; MEAN-FIELD-THEORY; PHASE-TRANSITIONS; NUCLEAR-MATTER; QUARK MATTER; EQUATION; DENSITY; STATE; MODEL;
D O I：
10.1142/S0218301320500445
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We study the star matter properties for Hybrid equation of state (EoS) by varying the bag constant. We use the effective field theory motivated relativistic mean field model (E-RMF) for hadron phase with recently reported FSUGarnet, G3 and IOPB-I parameter sets. The results of NL3 and NL3 omega rho sets are also shown for comparison. The simple MIT bag model is applied for the quark phase to construct the hybrid EoS. The hybrid neutron star mass and radius are calculated by varying with B-1/4 to constrain the B-1/4 values. It is found that B-1/4 = 130-160MeV is suitable for explaining the quark matter in neutron stars.
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页数：16
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