The Nucleon Direct Urca Processes in a Cooling Neutron Star
文献类型：期刊论文
| 作者 | Zhao, EG
|
| 刊名 | CHINESE PHYSICS LETTERS
 |
| 出版日期 | 2013 |
| 卷号 | 30期号:12页码:129501 |
| 关键词 | HYPERON-HYPERON INTERACTIONS ISOVECTOR SCALAR MESON MEAN-FIELD THEORY MATTER CONDENSATION HYPERNUCLEI |
| ISSN号 | 0256-307X |
| 通讯作者 | Liu, CZ (reprint author), Chinese Acad Sci, Natl Astron Observ, Changchun Observ, Changchun 130117, Peoples R China. |
| 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. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] |
| 原文出处 | http://dx.doi.org/10.1088/0256-307X/30/12/129501 |
| 语种 | 英语 |
| WOS记录号 | WOS:000329283000047 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15218]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Zhao, EG. The Nucleon Direct Urca Processes in a Cooling Neutron Star[J]. CHINESE PHYSICS LETTERS,2013,30(12):129501. |
| APA | Zhao, EG.(2013).The Nucleon Direct Urca Processes in a Cooling Neutron Star.CHINESE PHYSICS LETTERS,30(12),129501. |
| MLA | Zhao, EG."The Nucleon Direct Urca Processes in a Cooling Neutron Star".CHINESE PHYSICS LETTERS 30.12(2013):129501. |
入库方式： OAI收割
来源：理论物理研究所
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