Gravitational lensing of fermion stars

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	Gravitational lensing of fermion stars
	Liu, DH ; Zhang, YZ ; Zhu, ZH
	2000-09-15
发表期刊	COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN	0253-6102
卷号	34 期号:2 页码:349-358
摘要	We discuss the fermion stars, the self-gravitating systems of Fermi gases, as possible gravitational lenses. It is supposed that the fermions interact with themselves and other particles only by gravity, so they are the candidates of dark matter. We calculate Einstein deflection angles, study the image configurations, and calculate the magnification factors for a number of fermion stars that range from strong relativistic configurations to nonrelativistic ones. We find that typically there are three images, one Einstein ring and one radial critical curve for both cases. Two of the images are within the Einstein ring, and the other is outside, which may be very far. All these lensing characteristics can help to identify fermion stars as potential lensing objects, thus might give direct evidence that dark fermion stars exist in the universe.
关键词	dark matter fermion stars gravitational lens
语种	英语
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000089836300026
出版者	BALTZER SCI PUBL BV
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/15470
专题	中国科学院数学与系统科学研究院
通讯作者	Zhang, YZ
作者单位	1.Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China 2.Chinese Acad Sci, State Key Lab Sci & Engn Comp, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Beijing Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Liu, DH,Zhang, YZ,Zhu, ZH. Gravitational lensing of fermion stars[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2000,34(2):349-358.
APA	Liu, DH,Zhang, YZ,&Zhu, ZH.(2000).Gravitational lensing of fermion stars.COMMUNICATIONS IN THEORETICAL PHYSICS,34(2),349-358.
MLA	Liu, DH,et al."Gravitational lensing of fermion stars".COMMUNICATIONS IN THEORETICAL PHYSICS 34.2(2000):349-358.