The scaling of the redshift power spectrum: observations from the Las Campanas redshift survey
文献类型：期刊论文
| 作者 | Jing, YP; Borner, G |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2001-08-21 |
| 卷号 | 325期号:4页码:1389-1396 |
| 关键词 | galaxies : clusters : general galaxies : distances and redshifts cosmology : theory dark matter large-scale structure of Universe |
| 英文摘要 | In a recent paper we have studied the redshift power spectrum P-S(k, mu) in three cold dark matter (CDM) models with the help of high-resolution simulations. Here we apply the method to the largest available redshift survey, the Las Campanas Redshift Survey (LCRS). The basic model is to express P-S(k, mu) as a product of three factors P-S(k, mu) = P-R(k)X(1 + beta mu (2))D-2(k, mu). Here mu is the cosine of the angle between the wave vector and the line of sight. The damping function D for the range of scales accessible for an accurate analysis of the LCRS is well approximated by the Lorentz factor D = [I + 1/2(k mu sigma (12))(2)](-1). We have investigated different values for beta (i.e. beta = 0.4, 0.5, 0.6), and measured the real-space power spectrum P-R(k) and the pairwise velocity dispersion sigma (12)(k) from P-S(k, mu) for different values of mu. The velocity dispersion sigma (12)(k) is nearly a constant from k = 0.5-3 h Mpc(-1). The average value for this range is 510 +/- 70 km s(-1). The power spectrum PR (k) decreases with k approximately, with k(-1.7) for k between 0.1 and 4 h Mpc(-1). The statistical significance of the results, and the error bars, are found with the help of mock samples constructed from a large set of high-resolution simulations. A flat, low-density (Ohm (0) = 0.2) CDM model can give a good fit to the data, if a scale-dependent special bias scheme is used which we have called the cluster-underweighted bias (Jing, Mo & Borner). |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | COLD DARK-MATTER ; PAIRWISE VELOCITY DISPERSION ; MEAN MASS DENSITY ; PECULIAR VELOCITIES ; GALAXIES ; SAMPLE ; DISTORTIONS ; UNIVERSE ; SPACE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000170794900017 |
| 源URL | [http://119.78.226.72/handle/331011/28291]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Max Planck Inst Astrophys, Partner Grp, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Natl Astron Observ, Mitaka, Tokyo 1818588, Japan 4.Univ Tokyo, Sch Sci, Res Ctr Early Universe, Bunkyo Ku, Tokyo 113, Japan 5.Max Planck Inst Astrophys, D-85748 Garching, Germany |
| 推荐引用方式 GB/T 7714 | Jing, YP,Borner, G. The scaling of the redshift power spectrum: observations from the Las Campanas redshift survey[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2001,325(4):1389-1396. |
| APA | Jing, YP,&Borner, G.(2001).The scaling of the redshift power spectrum: observations from the Las Campanas redshift survey.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,325(4),1389-1396. |
| MLA | Jing, YP,et al."The scaling of the redshift power spectrum: observations from the Las Campanas redshift survey".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 325.4(2001):1389-1396. |
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