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QSO-galaxy association and gravitational lensing
Tang, SM; Zhang SN(张双南); Zhang, SN
2005
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
卷号5页码:#REF!
通讯作者Tang, SM (reprint author), Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China.
摘要The amplification caused by gravitational light bending by compact objects in a foreground galaxy can affect the apparent number density of background QSOs, as well as their distribution in the fields of galactic halos. In this work we investigate the number enhancement of QSOs in the fields of galactic halos caused by point mass lensing effect and singular isothermal lensing effect, and apply the micro-lensing effect due to dark compact objects in the halo to NGC 3628. NGC 3628 is a well-studied nearby edge-on Sbc peculiar galaxy, where QSOs are shown to be concentrated around the galaxy with a density much higher than background. We show that if present understanding of the luminosity function of QSOs is right, such concentration could not be caused by gravitational lensing.
文章类型Article; Proceedings Paper
关键词micro-lensing QSOs ULXs black holes Dark Matter galactic halo NGC 3628
学科领域Astronomy & Astrophysics
收录类别SCI
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000234137100023
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226504
专题粒子天体物理中心
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GB/T 7714
Tang, SM,Zhang SN,Zhang, SN. QSO-galaxy association and gravitational lensing[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2005,5:#REF!.
APA Tang, SM,张双南,&Zhang, SN.(2005).QSO-galaxy association and gravitational lensing.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,5,#REF!.
MLA Tang, SM,et al."QSO-galaxy association and gravitational lensing".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 5(2005):#REF!.
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