Effects of the phi Meson on the Properties of Hyperon Stars in the Density-dependent Relativistic Mean Field Model
文献类型：期刊论文
| 作者 | Tu, Zhong-Hao; Zhou, Shan-Gui
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2022 |
| 卷号 | 925期号:1页码:16 |
| 关键词 | EQUATION-OF-STATE MASS-RADIUS RELATION NEUTRON-STAR NUCLEAR-MATTER GENERAL-RELATIVITY NUMERICAL-METHOD GROUND-STATE CONSTRAINTS STABILITY |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ac3996 |
| 英文摘要 | The effects of the phi meson on the properties of hyperon stars are studied systematically in the framework of the density-dependent relativistic mean field (DDRMF) model. The phi meson shifts the hyperon threshold to a higher density and reduces the hyperon fractions in neutron star cores. It also strongly stiffens the equation of state calculated with various DDRMF effective interactions and increases the maximum mass of hyperon stars, but only a few effective interactions survive under the constraints from recent astrophysical observations. In the DDRMF model, the conformal limit of the sound velocity is still in strong tension with the fact that the maximum mass of neutron stars obtained in theoretical calculations reaches about 2 M (circle dot). Based on different interior composition assumptions, we discuss the possibility of the secondary object of GW190814 as a neutron star. When the phi meson is considered, DD-ME2 and DD-MEX support the possibility that the secondary object of GW190814 is a hyperon star rapidly rotating with Kepler frequency. |
| 学科主题 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27734]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China 2.Hunan Normal Univ, Synerget Innovat Ctr Quantum Effects & Applicat, Changsha 410081, Peoples R China 3.[Tu, Zhong-Hao 4.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 5.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tu, Zhong-Hao,Zhou, Shan-Gui. Effects of the phi Meson on the Properties of Hyperon Stars in the Density-dependent Relativistic Mean Field Model[J]. ASTROPHYSICAL JOURNAL,2022,925(1):16. |
| APA | Tu, Zhong-Hao,&Zhou, Shan-Gui.(2022).Effects of the phi Meson on the Properties of Hyperon Stars in the Density-dependent Relativistic Mean Field Model.ASTROPHYSICAL JOURNAL,925(1),16. |
| MLA | Tu, Zhong-Hao,et al."Effects of the phi Meson on the Properties of Hyperon Stars in the Density-dependent Relativistic Mean Field Model".ASTROPHYSICAL JOURNAL 925.1(2022):16. |
入库方式： OAI收割
来源：理论物理研究所
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