Nucleonic Direct Urca Processes and Cooling of the Massive Neutron Star by Antikaon Condensations
Nucleonic direct Urca processes and cooling of the massive neutron stars are studied by considering antikaon condensations. Calculations are performed in the relativistic mean field and isothermal interior approximations. Neutrino energy losses of the nucleonic direct Urca processes are reduced when...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Astronomy |
| Online Access: | http://dx.doi.org/10.1155/2020/6146913 |
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| author | Yan Xu Wen Bo Ding Cheng Zhi Liu J. L. Han |
| author_facet | Yan Xu Wen Bo Ding Cheng Zhi Liu J. L. Han |
| author_sort | Yan Xu |
| collection | DOAJ |
| description | Nucleonic direct Urca processes and cooling of the massive neutron stars are studied by considering antikaon condensations. Calculations are performed in the relativistic mean field and isothermal interior approximations. Neutrino energy losses of the nucleonic direct Urca processes are reduced when the optical potential of antikaons changes from −80 to −130 MeV. If the center density of the massive neutron stars is a constant, the masses taper off with the optical potential of antikaons, and neutrino luminosities of the nucleonic direct Urca processes decrease for ρCN=0.5 fm−3 but first increase and then decrease for larger ρCN. Large optical potential of antikaons results in warming of the nonsuperfluid massive neutron stars. Massive neutron stars turn warmer with the protonic S01 superfluids. However, the decline of the critical temperatures of the protonic S01 superfluids for the large optical potential of antikaons can speed up the cooling of the massive neutron stars. |
| format | Article |
| id | doaj-art-dd04eddb1caa40a1a0aa3574b56fe67e |
| institution | Kabale University |
| issn | 1687-7969 1687-7977 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
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| series | Advances in Astronomy |
| spelling | doaj-art-dd04eddb1caa40a1a0aa3574b56fe67e2025-02-03T01:04:29ZengWileyAdvances in Astronomy1687-79691687-79772020-01-01202010.1155/2020/61469136146913Nucleonic Direct Urca Processes and Cooling of the Massive Neutron Star by Antikaon CondensationsYan Xu0Wen Bo Ding1Cheng Zhi Liu2J. L. Han3National Astronomical Observatories, Chinese Academy of Sciences, DaTun Road A1, Chaoyang District, Beijing 100101, ChinaCollege of Mathematics and Physics, Bohai University, Jinzhou 121000, ChinaChangchun Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Changchun 130117, ChinaNational Astronomical Observatories, Chinese Academy of Sciences, DaTun Road A1, Chaoyang District, Beijing 100101, ChinaNucleonic direct Urca processes and cooling of the massive neutron stars are studied by considering antikaon condensations. Calculations are performed in the relativistic mean field and isothermal interior approximations. Neutrino energy losses of the nucleonic direct Urca processes are reduced when the optical potential of antikaons changes from −80 to −130 MeV. If the center density of the massive neutron stars is a constant, the masses taper off with the optical potential of antikaons, and neutrino luminosities of the nucleonic direct Urca processes decrease for ρCN=0.5 fm−3 but first increase and then decrease for larger ρCN. Large optical potential of antikaons results in warming of the nonsuperfluid massive neutron stars. Massive neutron stars turn warmer with the protonic S01 superfluids. However, the decline of the critical temperatures of the protonic S01 superfluids for the large optical potential of antikaons can speed up the cooling of the massive neutron stars.http://dx.doi.org/10.1155/2020/6146913 |
| spellingShingle | Yan Xu Wen Bo Ding Cheng Zhi Liu J. L. Han Nucleonic Direct Urca Processes and Cooling of the Massive Neutron Star by Antikaon Condensations Advances in Astronomy |
| title | Nucleonic Direct Urca Processes and Cooling of the Massive Neutron Star by Antikaon Condensations |
| title_full | Nucleonic Direct Urca Processes and Cooling of the Massive Neutron Star by Antikaon Condensations |
| title_fullStr | Nucleonic Direct Urca Processes and Cooling of the Massive Neutron Star by Antikaon Condensations |
| title_full_unstemmed | Nucleonic Direct Urca Processes and Cooling of the Massive Neutron Star by Antikaon Condensations |
| title_short | Nucleonic Direct Urca Processes and Cooling of the Massive Neutron Star by Antikaon Condensations |
| title_sort | nucleonic direct urca processes and cooling of the massive neutron star by antikaon condensations |
| url | http://dx.doi.org/10.1155/2020/6146913 |
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