Generalized split monopole magnetospheres: The effects of current sheets
文献类型:期刊论文
作者 | Li HQ(李惠泉)1,2,3; Wang JC(王建成)1,2,3 |
刊名 | PHYSICAL REVIEW D |
出版日期 | 2021-07-07 |
卷号 | 104期号:2 |
ISSN号 | 2470-0010 |
DOI | 10.1103/PhysRevD.104.023009 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | We show that energy should be dissipated or extracted in the current sheet (CS) of a split magnetosphere deviating from the Michel split monopole, with the CS heating up or cooling down; but the electromagnetic energy remains unchanged everywhere. Based on the decentered monopole solution generated by symmetry in flat spacetime, we construct two generalized split monopole configurations, in which the field lines intersect with the CS at arbitrary angles. One configuration resembles the outer geometry of the so-called new pulsar magnetosphere model, for which up to 47% of the spin down energy is transferred to the Joule heating process in the CS. In the other configuration, we observe that negative energy is dissipated in the CS, which is usually observed in magnetospheres on rotating black holes. This means that energy is extracted simultaneously from the central star and the CS to power the output Poynting flux at infinity. We interpret the extraction of energy from the CS as that thermal energy of charged particles in the CS is transferred to the ordered kinetic energy of these particles drifting in the force-free (FF) electromagnetic fields. Hence, the CS is like an air conditioner in the sky, which can heat up or cool down, depending on the configurations. |
学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 |
URL标识 | 查看原文 |
出版地 | ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA |
WOS关键词 | FORCE-FREE MAGNETOSPHERE |
资助项目 | Yunnan Natural Science FoundationNatural Science Foundation of Yunnan Province[2017FB005] |
WOS研究方向 | Astronomy & Astrophysics ; Physics |
语种 | 英语 |
出版者 | AMER PHYSICAL SOC |
WOS记录号 | WOS:000670703900003 |
资助机构 | Yunnan Natural Science FoundationNatural Science Foundation of Yunnan Province[2017FB005] |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24456] |
专题 | 云南天文台_天体测量及应用研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Li HQ(李惠泉) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650216 Kunming, China 3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 100012 Beijing, China |
推荐引用方式 GB/T 7714 | Li HQ,Wang JC. Generalized split monopole magnetospheres: The effects of current sheets[J]. PHYSICAL REVIEW D,2021,104(2). |
APA | Li HQ,&Wang JC.(2021).Generalized split monopole magnetospheres: The effects of current sheets.PHYSICAL REVIEW D,104(2). |
MLA | Li HQ,et al."Generalized split monopole magnetospheres: The effects of current sheets".PHYSICAL REVIEW D 104.2(2021). |
入库方式: OAI收割
来源:云南天文台
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。