QSO-galaxy association and gravitational lensing
文献类型：期刊论文
| 作者 | Tang, SM; Zhang SN(张双南) ; Zhang, SN
|
| 刊名 | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2005 |
| 卷号 | 5页码:#REF! |
| 关键词 | micro-lensing QSOs ULXs black holes Dark Matter galactic halo NGC 3628 |
| 通讯作者 | Tang, SM (reprint author), Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China. |
| 英文摘要 | 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. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 收录类别 | SCI |
| WOS记录号 | WOS:000234137100023 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/226504]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 推荐引用方式 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!. |
入库方式： OAI收割
来源：高能物理研究所
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