An analytical model for the non-linear redshift-space power spectrum

	An analytical model for the non-linear redshift-space power spectrum
	Kang, X ; Jing, YP ; Mo, HJ ; Borner, G
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2002-11-01
卷号	336 期号:3 页码:892-900
关键词	galaxies : clusters : general galaxies : distances and redshifts cosmology : theory dark matter large-scale structure of Universe
英文摘要	We use N-body simulations to test the predictions of redshift distortion in the power spectrum given by the halo model in which the clustering of dark matter particles is considered as a result both of the clustering of dark haloes in space and of the distribution of dark matter particles in each individual dark halo. The predicted redshift distortion depends sensitively on several model parameters in a different way from the real-space power spectrum. An accurate model of the redshift distortion can be constructed if the following properties of the halo population are modelled accurately: the mass function of dark haloes, the velocity dispersion among dark haloes, and the non-linear nature of halo bias on small scales. The model can be readily applied to interpreting the clustering properties and velocity dispersion of different populations of galaxies once a cluster-weighted bias (or equivalently an halo occupation number model) is specified for the galaxies. Some non-trivial bias features observed from redshift surveys of optical galaxies and of IRAS galaxies relative to the standard low-density cold dark matter model can be easily explained in the cluster weighted bias model. The halo model further indicates that a linear bias can be a good approximation only for k less than or equal to 0.1 h Mpc(-1).
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	DARK-MATTER HALOS ; PAIRWISE PECULIAR VELOCITIES ; COSMOLOGICAL MASS DENSITY ; GALAXY REDSHIFTS ; OMEGA ; BIAS ; CONSTANT ; PROFILES ; 2-POINT ; DISTRIBUTIONS
收录类别	SCI
语种	英语
WOS记录号	WOS:000178860300026
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/18250]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Shanghai Astron Observ, MPI Astrophys, Partner Grp, Shanghai 200030, Peoples R China 2.Max Planck Inst Astrophys, D-85748 Garching, Germany
推荐引用方式 GB/T 7714	Kang, X,Jing, YP,Mo, HJ,et al. An analytical model for the non-linear redshift-space power spectrum[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2002,336(3):892-900.
APA	Kang, X,Jing, YP,Mo, HJ,&Borner, G.(2002).An analytical model for the non-linear redshift-space power spectrum.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,336(3),892-900.
MLA	Kang, X,et al."An analytical model for the non-linear redshift-space power spectrum".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 336.3(2002):892-900.