The Nucleon Direct Urca Processes in a Cooling Neutron Star
文献类型：期刊论文
| 作者 | Xu Yan1 ; Liu Guang-Zhou2; Liu Cheng-Zhi1; Fan Cun-Bo1; Wang Hong-Yan3; Zhu Ming-Feng2; Zhao En-Guang4
|
| 刊名 | CHINESE PHYSICS LETTERS
 |
| 出版日期 | 2013-12-01 |
| 卷号 | 30期号:12 |
| 英文摘要 | In the relativistic mean field approximation, the relativistic energy losses of the nucleon direct Urca processes are studied in the degenerate baryon matter of neutron stars. We investigate the effects of hyperon degrees of freedom and the isovector scalar interaction which is considered by exchanging delta meson on the nucleon direct Urca processes in neutron star matter. The results indicate that the existence of hyperons decreases the abundance of protons and leptons and can sharply suppress the neutrino emissivity of the nucleon direct Urca processes, while it has only a little influence on the neutrino luminosity for a fixed neutron star whether delta mesons appear in a neutron star or not. However, the presence of delta mesons can result in obvious growth in the neutrino emissivity and luminosity which will speed up the cooling rate for the nonsuperfluid neutron star. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000329283000047 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5952]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Changchun Observ, Changchun 130117, Peoples R China 2.Jilin Univ, Ctr Theoret Phys, Changchun 130012, Peoples R China 3.Beihua Univ, Coll Phys, Jilin 132013, Jilin, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu Yan,Liu Guang-Zhou,Liu Cheng-Zhi,et al. The Nucleon Direct Urca Processes in a Cooling Neutron Star[J]. CHINESE PHYSICS LETTERS,2013,30(12). |
| APA | Xu Yan.,Liu Guang-Zhou.,Liu Cheng-Zhi.,Fan Cun-Bo.,Wang Hong-Yan.,...&Zhao En-Guang.(2013).The Nucleon Direct Urca Processes in a Cooling Neutron Star.CHINESE PHYSICS LETTERS,30(12). |
| MLA | Xu Yan,et al."The Nucleon Direct Urca Processes in a Cooling Neutron Star".CHINESE PHYSICS LETTERS 30.12(2013). |
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来源：国家天文台
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