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The Nucleon Direct Urca Processes in a Cooling Neutron Star
Xu, Y; Liu, GZ; Liu, CZ; Fan, CB; Wang, HY; Zhu, MF; Zhao, EG; Liu, CZ (reprint author), Chinese Acad Sci, Natl Astron Observ, Changchun Observ, Changchun 130117, Peoples R China.
2013
发表期刊CHINESE PHYSICS LETTERS
ISSN0256-307X
卷号30期号:12页码:129501
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.
部门归属[Xu Yan; Liu Cheng-Zhi; Fan Cun-Bo] Chinese Acad Sci, Natl Astron Observ, Changchun Observ, Changchun 130117, Peoples R China; [Liu Guang-Zhou; Zhu Ming-Feng] Jilin Univ, Ctr Theoret Phys, Changchun 130012, Peoples R China; [Wang Hong-Yan] Beihua Univ, Coll Phys, Jilin 132013, Jilin, Peoples R China; [Zhao En-Guang] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
关键词Hyperon-hyperon Interactions Isovector Scalar Meson Mean-field Theory Matter Condensation Hypernuclei
学科领域Physics
资助者National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047]
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收录类别SCI
语种英语
资助者National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047] ; National Natural Science Foundation of China [11075063, 11073033, 11247312, 11103047]
WOS记录号WOS:000329283000047
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15218
专题理论物理所SCI论文
通讯作者Liu, CZ (reprint author), Chinese Acad Sci, Natl Astron Observ, Changchun Observ, Changchun 130117, Peoples R China.
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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,2013,30(12):129501.
APA Xu, Y.,Liu, GZ.,Liu, CZ.,Fan, CB.,Wang, HY.,...&Liu, CZ .(2013).The Nucleon Direct Urca Processes in a Cooling Neutron Star.CHINESE PHYSICS LETTERS,30(12),129501.
MLA Xu, Y,et al."The Nucleon Direct Urca Processes in a Cooling Neutron Star".CHINESE PHYSICS LETTERS 30.12(2013):129501.
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