Bispectrum and nonlinear biasing of galaxies: Perturbation analysis, numerical simulation, and SDSS galaxy clustering

	Bispectrum and nonlinear biasing of galaxies: Perturbation analysis, numerical simulation, and SDSS galaxy clustering
	Nishimichi, Takahiro ; Kayo, Issha ; Hikage, Chiaki ; Yahata, Kazuhiro ; Taruya, Atsushi ; Jing, Yi Peng ; Sheth, Ravi K.; Suto, Yasushi
刊名	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
	2007
卷号	59 期号:1 页码:93-106
关键词	cosmology : large-scale structure of universe methods : statistical observations theory
英文摘要	We consider nonlinear biasing models of galaxies with particular attention to a correlation between the linear and quadratic biasing coefficients, b(1) and b(2). We first derive perturbative expressions for b(1) and b(2) in halo and peak biasing models. We then discuss our computations of the power spectra and bispectra of dark matter particles and halos using N-body simulation data and of volume-limited subsamples of Sloan Digital Sky Survey (SDSS) galaxies, and determine their b(1) and b(2). We find that the values of those coefficients at linear regimes (k < 0.2 h Mpc(-1)) are fairly insensitive to the redshift-space distortion and the survey volume shape. The resulting normalized amplitudes of the bispectra, Q, for equilateral triangles are insensitive to the values of b(1), implying that b(2) indeed correlates with b(1). The present results explain the previous finding of Kayo et al. (2004, PASJ, 56, 415) for the hierarchical relation of three-point correlation functions of SDSS galaxies. While the relations between b(1) and b(2) are quantitatively different for specific biasing models, their approximately similar correlations indicate a fairly generic outcome of the biasing due to the gravity in primordial Gaussian density fields.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	DIGITAL SKY SURVEY ; N-BODY SIMULATIONS ; LARGE-SCALE STRUCTURE ; SPECTROSCOPIC TARGET SELECTION ; 3-POINT CORRELATION-FUNCTIONS ; DARK-MATTER HALOES ; REDSHIFT-SPACE ; POWER-SPECTRUM ; DATA RELEASE ; GRAVITATIONAL-INSTABILITY
收录类别	SCI
语种	英语
WOS记录号	WOS:000244977200010
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/19435]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Univ Tokyo, Dept Phys, Sch Sci, Tokyo 1130033, Japan 2.Nagoya Univ, Dept Phys & Astrophys, Nagoya, Aichi, Japan 3.Shanghai Astron Observ, Partner Grp MPI Astrophys, Shanghai 200030, Peoples R China 4.Univ Penn, Dept Phys & Astron, Philadelphia, PA 19130 USA
推荐引用方式 GB/T 7714	Nishimichi, Takahiro,Kayo, Issha,Hikage, Chiaki,et al. Bispectrum and nonlinear biasing of galaxies: Perturbation analysis, numerical simulation, and SDSS galaxy clustering[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2007,59(1):93-106.
APA	Nishimichi, Takahiro.,Kayo, Issha.,Hikage, Chiaki.,Yahata, Kazuhiro.,Taruya, Atsushi.,...&Suto, Yasushi.(2007).Bispectrum and nonlinear biasing of galaxies: Perturbation analysis, numerical simulation, and SDSS galaxy clustering.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,59(1),93-106.
MLA	Nishimichi, Takahiro,et al."Bispectrum and nonlinear biasing of galaxies: Perturbation analysis, numerical simulation, and SDSS galaxy clustering".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 59.1(2007):93-106.