XAO OpenIR  > 射电天文研究室  > 脉冲星研究团组
Modified Fermi energy of electrons in a superhigh magnetic field
Zhu, Cui1,2,3; Gao, Zhi Fu1,2; Li, Xiang Dong4,5; Wang, Na1; Yuan, Jian Ping1; Peng, Qiu He4
2016-04-10
Source PublicationMODERN PHYSICS LETTERS A
ISSN0217-7323
Volume31Issue:11Pages:1650070
Contribution Rank1
Abstract

In this paper, we investigate the electron Landau level stability and its influence on the electron Fermi energy, E-F(e), in the circumstance of magnetars, which are powered by magnetic field energy. In a magnetar, the Landau levels of degenerate and relativistic electrons are strongly quantized. A new quantity g(n), the electron Landau level stability coefficient is introduced. According to the requirement that g(n) decreases with increasing the magnetic field intensity B, the magnetic field index beta in the expression of E-F(e) must be positive. By introducing the Dirac-delta function, we deduce a general formulae for the Fermi energy of degenerate and relativistic electrons, and obtain a particular solution to E-F(e) in a superhigh magnetic field (SMF). This solution has a low magnetic field index of beta = 1/6, compared with the previous one, and works when rho >= 10(7) g cm(-3) and B-cr << B <= 10(17) Gauss. By modifying the phase space of relativistic electrons, a SMF can enhance the electron number density n(e), and decrease the maximum of electron Landau level number, which results in a redistribution of electrons. According to Pauli exclusion principle, the degenerate electrons will fill quantum states from the lowest Landau level to the highest Landau level. As B increases, more and more electrons will occupy higher Landau levels, though g(n) decreases with the Landau level number n. The enhanced n(e) in a SMF means an increase in the electron Fermi energy and an increase in the electron degeneracy pressure. The results are expected to facilitate the study ofthe weak-interaction processes inside neutron stars and the magnetic-thermal evolution mechanism for magnetars.

Correspondent Emailzhifugao@xao.ac.cn
KeywordNeutron Star Equation Of State Fermi Energy
SubtypeArticle
DOI10.1142/S021773231650070X
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS KeywordNeutron-stars ; Nuclear-matter ; X-ray ; Emission ; State ; Repeaters ; Equation ; Physics ; Decay
WOS Research AreaPhysics
WOS SubjectPhysics, Nuclear ; Physics, Particles & Fields ; Physics, Mathematical
WOS IDWOS:000374542200006
Funding OrganizationXinjiang Radio Astrophysics Laboratory(2015KL012) ; Xinjiang Natural Science Foundation(2013211A053) ; Chinese National Science Foundation(11173041 ; National Basic Research Program of China grants 973 Programs(2012CB821801 ; Chinese Academy of Sciences(XDB09000000) ; West Light Foundation of Chinese Academy of Sciences(2172201302 ; Qinglan project of Jiangsu Province ; 11173042 ; 2015CB857100) ; XBB201422) ; 11003034 ; 11273051 ; 11373006 ; 11133001)
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/1394
Collection射电天文研究室_脉冲星研究团组
射电天文研究室
科技计划处
其它
Corresponding AuthorGao, Zhi Fu
Affiliation1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi, Xinjiang, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
4.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210008, Jiangsu, Peoples R China
5.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210008, Jiangsu, Peoples R China
First Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author AffilicationXinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhu, Cui,Gao, Zhi Fu,Li, Xiang Dong,et al. Modified Fermi energy of electrons in a superhigh magnetic field[J]. MODERN PHYSICS LETTERS A,2016,31(11):1650070.
APA Zhu, Cui,Gao, Zhi Fu,Li, Xiang Dong,Wang, Na,Yuan, Jian Ping,&Peng, Qiu He.(2016).Modified Fermi energy of electrons in a superhigh magnetic field.MODERN PHYSICS LETTERS A,31(11),1650070.
MLA Zhu, Cui,et al."Modified Fermi energy of electrons in a superhigh magnetic field".MODERN PHYSICS LETTERS A 31.11(2016):1650070.
Files in This Item:
File Name/Size DocType Version Access License
Zhu-2016-Modified Fe(349KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhu, Cui]'s Articles
[Gao, Zhi Fu]'s Articles
[Li, Xiang Dong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhu, Cui]'s Articles
[Gao, Zhi Fu]'s Articles
[Li, Xiang Dong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhu, Cui]'s Articles
[Gao, Zhi Fu]'s Articles
[Li, Xiang Dong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Zhu-2016-Modified Fermi energy of electrons in.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.