The Effects of δ Meson on the Neutron Star Cooling

XU Yan (许妍); LIU Guangzhou(刘广洲); WU Yaorui(吴姚睿); ZHU Mingfeng(朱明枫); YU Zi(喻孜); WANG Hongyan(王红岩); ZHAO Enguang(赵恩广)

doi:10.1088/1009-0630/14/5/06

Plasma Science and Technology > 2012 > 14(5): 375-378. > DOI: 10.1088/1009-0630/14/5/06

XU Yan (许妍), LIU Guangzhou(刘广洲), WU Yaorui(吴姚睿), ZHU Mingfeng(朱明枫), YU Zi(喻孜), WANG Hongyan(王红岩), ZHAO Enguang(赵恩广). The Effects of δ Meson on the Neutron Star Cooling[J]. Plasma Science and Technology, 2012, 14(5): 375-378. DOI: 10.1088/1009-0630/14/5/06

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The Effects of δ Meson on the Neutron Star Cooling

1 Center for Theoretical Physics Jilin University, Changchun 130023, China 2 College of Science, Nanjing Forestry University, Nanjing 210037, China 3 Institute of Theoretical Physics, Chinese Academy of Sciences,Beijing100190, China

Funds: partially supported by National Natural Science Foundation of China (Nos.10675024 and 11075063), the National Fundamental Fund project of Subsidy Funds of Personnel Training J0730311.

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Received Date: May 16, 2011

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Abstract

Abstract

In the framework of the relativistic mean field theory, the isovector scalar interaction is considered by exchanging ? meson to study the influence of ? meson on the cooling properties of neutron star matter. The calculation results show that with the inclusion of ? meson, the neutrino emissivity of the direct Urca processes increases, and thus enhances the cooling of neutron star matter. When strong proton superfluidity is considered, the theoretical cooling curves agree with the observed thermal radiation for isolated neutron stars.
- Neutron star,
- direct Urca processes,
- δ meson,
- proton superfluidity

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