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Generalized split monopole magnetospheres: The effects of current sheets
Li HQ(李惠泉)1,2,3; Wang JC(王建成)1,2,3
发表期刊PHYSICAL REVIEW D
2021-07-07
卷号104期号:2
DOI10.1103/PhysRevD.104.023009
产权排序第1完成单位
收录类别SCI
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.

资助项目Yunnan Natural Science FoundationNatural Science Foundation of Yunnan Province[2017FB005]
项目资助者Yunnan Natural Science FoundationNatural Science Foundation of Yunnan Province[2017FB005]
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者AMER PHYSICAL SOC
出版地ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
ISSN2470-0010
URL查看原文
WOS记录号WOS:000670703900003
WOS研究方向Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
关键词[WOS]FORCE-FREE MAGNETOSPHERE
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/24456
专题天体测量技术及应用研究组
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
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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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).
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