An estimation of local bulk flow with the maximum-likelihood method
文献类型：期刊论文
| 作者 | Ma, Yin-Zhe1,2,3; Pan, Jun3,4 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2014 |
| 卷号 | 437期号:2页码:1996-2004 |
| 关键词 | methods: data analysis methods: statistical galaxies: kinematics and dynamics cosmology: observations large-scale structure of Universe |
| ISSN号 | 0035-8711 |
| 英文摘要 | A maximum-likelihood method, tested as an unbiased estimator from numerical simulations, is used to estimate cosmic bulk flow from peculiar velocity surveys. The likelihood function is applied to four observational catalogues (ENEAR, SFI++, A1SN and SC) constructed from galaxy peculiar velocity surveys and Type Ia supernovae data at low redshift (z <= 0.03). We find that the Spiral Field I-band catalogue constrains the bulk flow to be V = 290 +/- 30 km s(-1) towards l = 281 degrees +/- 7 degrees, b = 8 degrees(+ 6 degrees)(-5 degrees) on effective scales of 58 h(-1) Mpc, which is the tightest constraints achievable at the present time. By comparing the amplitudes of our estimated bulk flows with theoretical prediction, we find excellent agreement between the two. In addition, directions of estimated bulk flows are also consistent with measurements in other studies. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | PECULIAR VELOCITY-FIELD ; EARLY-TYPE GALAXIES ; REDSHIFT-DISTANCE SURVEY ; HYPER-PARAMETER METHOD ; H(-1) MPC SCALES ; IA SUPERNOVAE ; COSMIC FLOWS ; LAMBDA-CDM ; KM S(-1) ; STREAMING MOTIONS |
| 收录类别 | SCI |
| 原文出处 | 10.1093/mnras/stt2038 |
| 语种 | 英语 |
| WOS记录号 | WOS:000331617000074 |
| 公开日期 | 2014-11-20 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/10617]  |
| 专题 | 紫金山天文台_南极天文中心 |
| 作者单位 | 1.Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada 2.Canadian Inst Theoret Astrophys, Toronto, ON M5S 1A1, Canada 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 4.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Yin-Zhe,Pan, Jun. An estimation of local bulk flow with the maximum-likelihood method[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,437(2):1996-2004. |
| APA | Ma, Yin-Zhe,&Pan, Jun.(2014).An estimation of local bulk flow with the maximum-likelihood method.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,437(2),1996-2004. |
| MLA | Ma, Yin-Zhe,et al."An estimation of local bulk flow with the maximum-likelihood method".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 437.2(2014):1996-2004. |
入库方式： OAI收割
来源：紫金山天文台
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