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相关论文: DESIVAST: A Catalog of Low-Redshift Voids using Da…

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We produce the most comprehensive public void catalog to date using the Sloan Digital Sky Survey Data Release 7 main sample out to redshift z=0.2 and the luminous red galaxy sample out to z=0.44. Using a modified version of the…

宇宙学与河外天体物理 · 物理学 2015-06-05 P. M. Sutter , Guilhem Lavaux , Benjamin D. Wandelt , David H. Weinberg

We present a cosmic void catalog using the large-scale structure galaxy catalog from the Baryon Oscillation Spectroscopic Survey (BOSS). This galaxy catalog is part of the Sloan Digital Sky Survey (SDSS) Data Release 12 and is the final…

The aim of this study is to distinguish genuine cosmic voids, found in a galaxy catalog by the void finder ZOBOV-VIDE, from under-dense regions in a Poisson distribution of objects. For this purpose, we perform two multivariate analyses…

宇宙学与河外天体物理 · 物理学 2019-03-14 M. -C Cousinou , A. Pisani , A. Tilquin , N. Hamaus , A. -J Hawken , S. Escoffier

We produce several public void catalogs using a volume-limited subsample of the Sloan Digital Sky Survey Data Release 7 (SDSS DR7). Using new implementations of three different void-finding algorithms, VoidFinder and two ZOBOV-based…

星系天体物理 · 物理学 2023-06-09 Kelly A. Douglass , Dahlia Veyrat , Segev BenZvi

We discuss various applications of VIDE, the Void IDentification and Examination toolkit, an open-source Python/C++ code for finding cosmic voids in galaxy redshift surveys and N-body simulations. Based on a substantially enhanced version…

宇宙学与河外天体物理 · 物理学 2017-03-22 P. M. Sutter , N. Hamaus , A. Pisani , G. Lavaux , B. D. Wandelt

The study of the interesting cosmological properties of voids in the Universe depends on the efficient and robust identification of such voids in galaxy redshift surveys. Recently, Sutter et al. (2012) have published a public catalogue of…

宇宙学与河外天体物理 · 物理学 2014-04-29 Seshadri Nadathur , Shaun Hotchkiss

We present VIDE, the Void IDentification and Examination toolkit, an open-source Python/C++ code for finding cosmic voids in galaxy redshift surveys and N-body simulations, characterizing their properties, and providing a platform for more…

We present a statistical analysis of voids in the 2dF galaxy redshift survey (2dFGRS). In order to detect the voids, we have developed two robust algorithms. We define voids as non-overlapping maximal spheres empty of halos or galaxies with…

The DEEP2 project will obtain redshifts for ~60,000 galaxies between z~0.7-1.5 in a comoving volume of 7 10^6 Mpc/h^3 for an LCDM universe. The survey will map four separate 2 by 0.5 degree strips of the sky. To study the expected…

天体物理学 · 物理学 2009-11-07 Alison L. Coil , Marc Davis , Istvan Szapudi

We discuss the universality and self-similarity of void density profiles, for voids in realistic mock luminous red galaxy (LRG) catalogues from the Jubilee simulation, as well as in void catalogues constructed from the SDSS LRG and Main…

宇宙学与河外天体物理 · 物理学 2016-10-26 S. Nadathur , S. Hotchkiss , J. M. Diego , I. T. Iliev , S. Gottlöber , W. A. Watson , G. Yepes

We present a detailed description of our void finding algorithm which is an extension of the prescription by Hoyle and Vogeley (2002). We include a discussion of the reproducibility and robustness of the algorithm as well as the statistical…

宇宙学与河外天体物理 · 物理学 2009-07-22 Caroline Foster , Lorne A. Nelson

The Void Galaxy Survey (VGS) is a multi-wavelength program to study $\sim$60 void galaxies. Each has been selected from the deepest interior regions of identified voids in the SDSS redshift survey on the basis of a unique geometric…

One of the most striking features in galaxy redshift surveys is the ubiquitous presence of voids. However, voids have not been extensively studied due to observational limitations. Until recently, galaxy redshift surveys included only a few…

天体物理学 · 物理学 2007-05-23 Fiona Hoyle , Michael S Vogeley

The cross-correlation of cosmic voids with the lensing convergence ($\kappa$) map of the Cosmic Microwave Background (CMB) fluctuations provides a powerful tool to refine our understanding of the cosmological model. However, several studies…

What do we know about voids in the dark matter distribution given the Sloan Digital Sky Survey (SDSS) and assuming the $\Lambda\mathrm{CDM}$ model? Recent application of the Bayesian inference algorithm BORG to the SDSS Data Release 7 main…

宇宙学与河外天体物理 · 物理学 2015-06-23 Florent Leclercq , Jens Jasche , P. M. Sutter , Nico Hamaus , Benjamin Wandelt

The stacked density profile of cosmic voids in the galaxy distribution provides an important tool for the use of voids for precision cosmology. We study the density profiles of voids identified using the ZOBOV watershed transform algorithm…

宇宙学与河外天体物理 · 物理学 2015-06-22 S. Nadathur , S. Hotchkiss , J. M. Diego , I. T. Iliev , S. Gottlöber , W. A. Watson , G. Yepes

We present a public catalogue of voids in the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 11 LOWZ and CMASS galaxy surveys. This catalogue contains information on the location, sizes, densities, shapes and bounding surfaces…

宇宙学与河外天体物理 · 物理学 2016-09-02 Seshadri Nadathur

We present a new void search algorithm for automated detection of voids in three-dimensional redshift surveys. Based on a model in which the main features of the LSS of the Universe are voids and walls, we classify the galaxies into wall…

天体物理学 · 物理学 2009-10-28 Hagai El-Ad , Tsvi Piran , Luiz Nicolaci da Costa
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