Spontaneous magnetization of solid quark-cluster stars
文献类型：期刊论文
| 作者 | Lai, Xiao-Yu1,2 ; Xu, Ren-Xin3,4
|
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 40期号:9页码:095102 |
| 通讯作者邮箱 | laixy@pku.edu.cn |
| 关键词 | pulsars strange stars magnetic fields |
| ISSN号 | 1674-1137 |
| 通讯作者 | Lai, Xiao-Yu |
| 英文摘要 | Pulsar-like compact stars usually have strong magnetic fields, with strengths from similar to 10(8) to similar to 10(12) G on the surface. How such strong magnetic fields can be generated and maintained is still an unsolved problem, which is, in principle, related to the interior structure of compact stars, i.e., the equation of state of cold matter at supra-nuclear density. In this paper we are trying to solve the problem in the regime of solid quark-cluster stars. Inside quark-cluster stars, the extremely low ratio of number density of electrons to that of baryons n(e)/n(b) and the screening effect from quark-clusters could reduce the long-range Coulomb interaction between electrons to short-range interaction. In this case, Stoner's model could apply, and we find that the condition for ferromagnetism is consistent with that for the validity of Stoner's model. Under the screened Coulomb repulsion, the electrons inside the stars could be spontaneously magnetized and become ferromagnetic, and hence would contribute non-zero net magnetic momentum to the whole star. We conclude that, for most cases in solid quark-cluster stars, the amount of net magnetic momentum, which is proportional to the amount of unbalanced spins xi = (n(+) - n(-))/n(e) and depends on the number density of electrons n(e) = n(+) + n(-), could be significant with non-zero xi. The net magnetic moments of electron system in solid quark-cluster stars could be large enough to induce the observed magnetic fields for pulsars with B similar to 10(11) to similar to 10(13) G. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | NEUTRON-STARS ; MATTER ; MODEL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000383367200012 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/1409]  |
| 专题 | 脉冲星研究团组 新疆天文台_其它 |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Xinjiang Univ, Sch Phys, Urumqi 830046, Peoples R China 3.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 4.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lai, Xiao-Yu,Xu, Ren-Xin. Spontaneous magnetization of solid quark-cluster stars[J]. CHINESE PHYSICS C,2016,40(9):095102. |
| APA | Lai, Xiao-Yu,&Xu, Ren-Xin.(2016).Spontaneous magnetization of solid quark-cluster stars.CHINESE PHYSICS C,40(9),095102. |
| MLA | Lai, Xiao-Yu,et al."Spontaneous magnetization of solid quark-cluster stars".CHINESE PHYSICS C 40.9(2016):095102. |
入库方式： OAI收割
来源：新疆天文台
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