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Xu, Y; Yu, Z1; Zhang, XJ; Fan, CB; Liu, GZ; Zhao, EG; Huang, XL; Liu, CZ
Direct Urca Processes Involving Proton S-1(0) Superfluidity in Neutron Star Cooling
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
语种英语
关键词PROCESSES INVOLVING HYPERONS NUCLEAR-MATTER X-RAY MAGNETIC-FIELDS PULSAR EMISSION CORES
摘要A detailed description of the baryon direct Urca processes A: n -> p + e + (v) over bar (e), B: Lambda -> p + e + (v) over bar (e), and C: Xi(-) -> Lambda + e + (v) over bar (e), related to the neutron star cooling is given in the relativistic mean field approximation. The contributions of the reactions B and C on the neutrino luminosity are calculated by means of the relativistic expressions of the neutrino energy losses. Our results show that the total neutrino luminosities of the reactions A, B and C within the mass range (1.603-2.067) M-circle dot ((1.515-1.840) M-circle dot for TM1 model) for GM1 model are larger than the corresponding values for neutron star without hyperons. Furthermore, although the neutrino emissivity of the reaction A is suppressed with the appearance of the proton S-1(0) superfluid, the contribution of the reactions B and C can still quicken a massive neutron star cooling. In particular, the reaction C in PSR J1614-2230 and J0348+0432 is not suppressed by the proton S-1(0) superfluid due to the higher threshold density of the reaction C, which will further speed up the two pulsars cooling.
2018
ISSN0253-6102
卷号69期号:4页码:425-433
学科领域Physics
学科门类Physics, Multidisciplinary
DOI10.1088/0253-6102/69/4/425
收录类别SCIE
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22928
专题理论物理所科研产出_SCI论文
作者单位1.Chinese Acad Sci, Natl Astron Observ, Changchun Observ, Changchun 130117, Jilin, Peoples R China
2.Nanjing Forestry Univ, Coll Sci, Nanjing 210037, Jiangsu, Peoples R China
3.Jilin Univ, Ctr Theoret Phys, Changchun 130023, Jilin, Peoples R China
4.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
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Xu, Y,Yu, Z,Zhang, XJ,et al. Direct Urca Processes Involving Proton S-1(0) Superfluidity in Neutron Star Cooling[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2018,69(4):425-433.
APA Xu, Y.,Yu, Z.,Zhang, XJ.,Fan, CB.,Liu, GZ.,...&Liu, CZ.(2018).Direct Urca Processes Involving Proton S-1(0) Superfluidity in Neutron Star Cooling.COMMUNICATIONS IN THEORETICAL PHYSICS,69(4),425-433.
MLA Xu, Y,et al."Direct Urca Processes Involving Proton S-1(0) Superfluidity in Neutron Star Cooling".COMMUNICATIONS IN THEORETICAL PHYSICS 69.4(2018):425-433.
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