Existence of hyperons in the pulsar PSRJ1614-2230

被引：46
作者：
Sulaksono, A. [2 ]
Agrawal, B. K. [1 ]
机构：
[1] Saha Inst Nucl Phys, Kolkata 700064, India
[2] Univ Indonesia, Dept Fis, FMIPA, Depok 16424, Indonesia
来源：
NUCLEAR PHYSICS A | 2012年 / 895卷
关键词：
Relativistic mean-field model; Dense matter; Neutron stars; MEAN-FIELD THEORY; NEUTRON-STARS; NUCLEAR-EQUATION; RECENT PROGRESS; STATE; MODELS; MATTER; HYPERNUCLEI; LAMBDA; MASS;
D O I：
10.1016/j.nuclphysa.2012.09.006
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：
The possibility of existence of hyperons in the recently measured 2M(circle dot) pulsar PSRJ1614-2230 is explored using a diverse set of nuclear equations of state calculated within the relativistic mean-field models. Our results indicate that the nuclear equations of state compatible with heavy-ion data allow the hyperons to exist in the PSRJ1614-2230 only for significantly larger values for the meson-hyperon coupling strengths. The maximum mass configurations for these cases contain sizable hyperon fractions (similar to 60%) and yet masquared their counterpart composed of only nucleonic matter. (c) 2012 Elsevier B.V. All rights reserved.
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页码：44 / 58
页数：15
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