Gravitational lensing effects on submillimetre galaxy counts
文献类型：期刊论文
| 作者 | Er, Xinzhong1; Li, Guoliang2 ; Mao, Shude1,3; Cao, Liang1
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2013-04-01 |
| 卷号 | 430期号:2页码:1423-1432 |
| 关键词 | gravitational lensing: strong galaxies: clusters: general submillimetre: galaxies |
| ISSN号 | 0035-8711 |
| 通讯作者 | Er, XZ (reprint author), Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China. Email: xer@nao.cas.cn |
| 英文摘要 | We study the effects on the number counts of submillimetre galaxies due to gravitational lensing. We explore the effects on the magnification cross-section due to halo density profiles, ellipticity and cosmological parameter (the power-spectrum normalization sigma(8)). We show that the ellipticity does not strongly affect the magnification cross-section in gravitational lensing while the halo radial profiles do. Since the baryonic cooling effect is stronger in galaxies than clusters, galactic haloes are more concentrated. In light of this, a new scenario of two-halo-population model is explored where galaxies are modelled as a singular isothermal sphere profile and clusters as a Navarro, Frenk and White profile. We find that the transition mass between the two has modest effects on the lensing probability. The cosmological parameter sigma(8) alters the abundance of haloes and therefore affects our results. Compared with other methods, our model is simpler and more realistic. The conclusions of previous works confirm that gravitational lensing is a natural explanation for the number count excess at the bright end. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DARK-MATTER HALOES ; DEGREE EXTRAGALACTIC SURVEY ; NUMBER COUNTS ; LENSED GALAXIES ; DENSITY PROFILE ; REDSHIFT SURVEY ; ARC STATISTICS ; CLUSTERS ; MODELS ; HERMES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000318275000057 |
| 公开日期 | 2014-01-08 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/9891]  |
| 专题 | 中国科学院紫金山天文台 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 3.Univ Manchester, Jodrell Bank, Ctr Astrophys, Manchester M13 9PL, Lancs, England |
| 推荐引用方式 GB/T 7714 | Er, Xinzhong,Li, Guoliang,Mao, Shude,et al. Gravitational lensing effects on submillimetre galaxy counts[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,430(2):1423-1432. |
| APA | Er, Xinzhong,Li, Guoliang,Mao, Shude,&Cao, Liang.(2013).Gravitational lensing effects on submillimetre galaxy counts.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,430(2),1423-1432. |
| MLA | Er, Xinzhong,et al."Gravitational lensing effects on submillimetre galaxy counts".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 430.2(2013):1423-1432. |
入库方式： OAI收割
来源：紫金山天文台
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