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相关论文: Evolution of the two-point correlation function in…

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Redshift-space distortions (RSD) in galaxy redshift surveys generally break both the isotropy and homogeneity of galaxy distribution. While the former aspect is particularly highlighted as a probe of growth of structure induced by gravity,…

宇宙学与河外天体物理 · 物理学 2020-01-08 Atsushi Taruya , Shohei Saga , Michel-Andrès Breton , Yann Rasera , Tomohiro Fujita

We present predicted Sunyaev-Zeldovich (SZ) properties of known X-ray clusters of galaxies for which gas temperature measurements are available. The reference sample was compiled from the BAX database for X-ray clusters. The…

宇宙学与河外天体物理 · 物理学 2015-05-14 Luis Ferramacho , Alain Blanchard

(abridged) The evolution of galaxy clustering from z=0 to z=4.5 is analyzed using the angular correlation function and the photometric redshift distribution of galaxies brighter than I_{AB}\le 28.5 in the HDF North. The reliability of the…

We use N-body simulations to study evolution of galaxy clusters over the redshift interval 0 <= z <= 0.5 in cosmological models with a mixture of cold and hot dark matter (CHDM). Four different techniques are utilized: the cluster-cluster…

天体物理学 · 物理学 2009-10-28 Charles Walter , Anatoly Klypin

The mass density distribution of Newtonian self-gravitating systems is studied analytically in field theoretical method. Modeling the system as a fluid in hydrostatical equilibrium, we apply Schwinger's functional derivative on the average…

星系天体物理 · 物理学 2021-07-21 Yang Zhang , Qing Chen , Shuguang Wu

Using an ensemble of high resolution 2D numerical simulations, we explore the scaling properties of cosmological density fluctuations in the non-linear regime. We study the scaling behaviour of the usual $N$--point volume-averaged…

天体物理学 · 物理学 2009-10-30 D. Munshi , L. Y. Chiang , P. Coles , A. L. Melott

We study the evolution of the halo-halo correlation function and bias in a LCDM model using very high-resolution N-body simulations. The high force and mass resolution allows dark matter (DM) halos to survive in the tidal fields in…

天体物理学 · 物理学 2007-05-23 Andrey Kravtsov , Anatoly Klypin , Pedro Colin , Alexei Khokhlov

We have used the projected two-point correlation function, $w(r_p)$, to investigate the spatial distribution of the 591 galaxies with secure redshifts between $0 \leq z \leq 1.3$ in the five CFRS fields. The slope of the two-point…

天体物理学 · 物理学 2016-08-30 O. Le Fevre , D. Hudon , S. J. Lilly , D. Crampton , F. Hammer , L. Tresse

Padmanabhan (1996) has suggested a model to relate the nonlinear two - point correlation function to the linear two - point correlation function. In this paper, we extend this model in two directions: (1) By averaging over the initial…

天体物理学 · 物理学 2015-06-24 Dipak Munshi , T. Padmanabhan

The well-known self-similar solution for the two-point correlation function of the density field is valid only in an Einstein-de Sitter universe. We attempt to extend the solution for non-Einstein-de Sitter universes. For this purpose we…

天体物理学 · 物理学 2009-11-07 Tatsushi Suginohara , Atsushi Taruya , Yasushi Suto

We study the evolution of the cluster correlation function and its richness-dependence from z = 0 to z = 3 using large-scale cosmological simulations. A standard flat LCDM model with \Omega_m = 0.3 and, for comparison, a tilted \Omega_m = 1…

天体物理学 · 物理学 2009-11-10 Neta A. Bahcall , Lei Hao , Paul Bode , Feng Dong

We discuss the evolution of clustering of galaxies in the Universe from the present epoch back to z ~ 2, using the first-epoch data from the VIMOS-VLT Deep Survey (VVDS). We present the evolution of the projected two-point correlation…

Motivated by the results presented in a companion paper, here we give a simple analytical expression for the matter n-point functions in the Zel'dovich approximation (ZA) both in real and in redshift space (including the angular case). We…

宇宙学与河外天体物理 · 物理学 2015-06-18 Svetlin Tassev

I review recent progress in understanding and modeling galaxy clustering in cosmological simulations, with emphasis on models based on high-resolution dissipationless simulations. During the last decade, significant advances in our…

天体物理学 · 物理学 2007-05-23 Andrey V. Kravtsov

We present an analysis of the small-to-intermediate scale clustering of samples of Luminous Red Galaxies (LRGs) from the Sloan Digital Sky Survey and the 2dF-SDSS LRG and QSO (2SLAQ) survey carefully matched to have the same rest-frame…

Focusing on both small separations and Baryonic Acoustic Oscillation scales, the cosmic evolution of the clustering properties of peak, void, wall, and filament-type critical points is measured using two-point correlation functions in…

宇宙学与河外天体物理 · 物理学 2021-02-17 Junsup Shim , Sandrine Codis , Christophe Pichon , Dmitri Pogosyan , Corentin Cadiou

We present a clustering analysis of QSOs using over 20000 objects from the final catalogue of the 2dF QSO Redshift Survey (2QZ), measuring the z-space correlation function, xi(s). When averaged over the range 0.3<z<2.2 we find that xi(s) is…

天体物理学 · 物理学 2011-03-10 Scott M. Croom , B. J. Boyle , T. Shanks , R. J. Smith , L. Miller , P. J. Outram , N. S. Loaring , F. Hoyle , J. da Angela

We have derived estimators for the linear growth rate of density fluctuations using the cross-correlation function of voids and haloes in redshift space, both directly and in Fourier form. In linear theory, this cross-correlation contains…

宇宙学与河外天体物理 · 物理学 2016-08-10 Yan-Chuan Cai , Andy Taylor , John A. Peacock , Nelson Padilla

We show how to simulate the clustering of rich clusters of galaxies using a technique based on the Zel'dovich approximation. This method well reproduces the spatial distribution of clusters obtainable from full N-body simulations at a…

天体物理学 · 物理学 2015-06-24 S. Borgani , P. Coles , L. Moscardini

We present new measurements of the Sunyaev-Zel'dovich (SZ) effect from clusters of galaxies using the Sunyaev-Zel'dovich Infrared Experiment (SuZIE II). We combine these new measurements with previous cluster observations with the SuZIE…

天体物理学 · 物理学 2009-11-10 B. A. Benson , P. A. R. Ade , J. J. Bock , K. M. Ganga , C. N. Henson , K. L. Thompson , S. E. Church