Knowledge Management System of Institute of Theoretical Physics, CAS
| 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 | |
| Source Publication | COMMUNICATIONS IN THEORETICAL PHYSICS
 |
| Language | 英语 |
| Keyword | PROCESSES INVOLVING HYPERONS NUCLEAR-MATTER X-RAY MAGNETIC-FIELDS PULSAR EMISSION CORES |
| Abstract | 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 | |
| ISSN | 0253-6102 |
| Volume | 69Issue:4Pages:425-433 |
| Subject Area | Physics |
| MOST Discipline Catalogue | Physics, Multidisciplinary |
| DOI | 10.1088/0253-6102/69/4/425 |
| Indexed By | SCIE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/22928 |
| Collection | 理论物理所科研产出_SCI论文 |
| Affiliation | 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 |
| Recommended Citation GB/T 7714 | 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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