Effects of -meson on the EOS, Maximum Masses, and Radii of Hyperon Stars
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| 论文题目: |
Effects of -meson on the EOS, Maximum Masses, and Radii of Hyperon Stars |
| 论文题目英文: |
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| 作者: |
Biswal, S. K.; Patra, S. K.; Zhou, Shan-Gui |
| 论文出处: |
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| 刊物名称: |
ASTROPHYSICAL JOURNAL |
| 年: |
2019 |
| 卷: |
885 |
| 期: |
1 |
| 页: |
25 |
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| 摘要: |
The relativistic mean field (RMF) model is considered as one of the best methods to study the nuclear system that has a high degree of isospin asymmetry and baryon density. In the present contribution, we take 25 well-known parameter sets of the RMF model to discuss the parametric dependence of the neutron and hyperon star properties. Various properties of the canonical star are discussed and only a few parameter sets are found to satisfy both the astrophysical and nuclear matter constraints. We add both and ?* strange mesons to the ?-?-? model. Effects of the -meson on the equation of state and maximum mass of the hyperon star are discussed in detail. -meson affects the threshold density of hyperon production and pushes the hyperon production to a higher density. Effects of the hyperon?meson coupling constants on the maximum mass?radius profile and strangeness content of the hyperon star are discussed in the ?-?-?--?* model. |
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