The Nucleon Direct Urca Processes in a Cooling Neutron Star
文献类型：期刊论文
| 作者 | Xu Y(许妍) ; Liu GZ(刘广洲) ; Liu CZ(刘承志) ; Fan CB(范存波) ; Wang HY(王红岩) ; Zhu MF(朱明枫) ; Zhao EG(赵恩广) |
| 刊名 | Chinese physics letters
 |
| 出版日期 | 2013 |
| 期号 | 12 |
| 合作状况 | 国内 |
| 中文摘要 | 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 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 mesons appear in a neutron star or not. However, the presence of 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 |
| 公开日期 | 2014-01-08 |
| 源URL | [http://210.72.87.206/handle/60510005-5/79]  |
| 专题 | 长春人造卫星观测站_卫星轨道理论研究室_期刊论文 |
| 推荐引用方式 GB/T 7714 | Xu Y,Liu GZ,Liu CZ,et al. The Nucleon Direct Urca Processes in a Cooling Neutron Star[J]. Chinese physics letters,2013(12). |
| APA | Xu Y.,Liu GZ.,Liu CZ.,Fan CB.,Wang HY.,...&Zhao EG.(2013).The Nucleon Direct Urca Processes in a Cooling Neutron Star.Chinese physics letters(12). |
| MLA | Xu Y,et al."The Nucleon Direct Urca Processes in a Cooling Neutron Star".Chinese physics letters .12(2013). |
入库方式： OAI收割
来源：长春人造卫星观测站
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