Influence of Entropy on Composition and Structure of Massive Protoneutron Stars
文献类型：期刊论文
| 作者 | Hong, Bin; Jia, Huan-Yu; Mu, Xue-Ling; Zhou, Xia |
| 刊名 | COMMUNICATIONS IN THEORETICAL PHYSICS
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 66页码:224-230 |
| 关键词 | massive protoneutron stars entropy PSR J1614-2230 PSR J0348+0432 |
| ISSN号 | 0253-6102 |
| 英文摘要 | Adjusting the suitable coupling constants in relativistic mean field (RMF) theory and focusing on thermal effect of an entropy per baryon (S) from 0 to 3, we investigate the composition and structure of massive protoneutron stars corresponding PSR J1614-2230 and PSR J0348+0432. It is found that massive protoneutron stars (PNSs) have more hyperons than cold neutron stars. The entropy per baryon will stiffen the equation of state, and the influence on the pressure is more obvious at low density than high density, while the influence on the energy density is more obvious at high density than low density. It is found that higher entropy will give higher maximum mass, higher central temperature and lower central density. The entropy per baryon changes from 0 to 3, the radius of a PNS corresponding PSR J0348+0432 will increase from 12.86 km to 19.31 km and PSR J1612-2230 will increase from 13.03 km to 19.93 km. The entropy per baryon will raise the central temperature of massive PNSs in higher entropy per baryon, but the central temperature of massive PNSs maybe keep unchanged in lower entropy per baryon. The entropy per baryon will increase the moment of inertia of a massive protoneutron star, while decrease gravitational redshift of a massive neutron star. |
| WOS关键词 | EQUATION-OF-STATE ; NEUTRON-STARS ; HYPERNUCLEI ; POTENTIALS ; HYPERONS ; PHYSICS ; LAMBDA |
| 资助项目 | National Natural Science Foundation of China[11175147] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000384295100012 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://119.78.100.186/handle/113462/43409]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Jia, Huan-Yu |
| 作者单位 | Southwest Jiaotong Univ, Inst Modern Phys, Chengdu 610031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hong, Bin,Jia, Huan-Yu,Mu, Xue-Ling,et al. Influence of Entropy on Composition and Structure of Massive Protoneutron Stars[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2016,66:224-230. |
| APA | Hong, Bin,Jia, Huan-Yu,Mu, Xue-Ling,&Zhou, Xia.(2016).Influence of Entropy on Composition and Structure of Massive Protoneutron Stars.COMMUNICATIONS IN THEORETICAL PHYSICS,66,224-230. |
| MLA | Hong, Bin,et al."Influence of Entropy on Composition and Structure of Massive Protoneutron Stars".COMMUNICATIONS IN THEORETICAL PHYSICS 66(2016):224-230. |
入库方式： OAI收割
来源：近代物理研究所
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