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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…

We present angular diameter distance measurements obtained by locating the BAO scale in the distribution of galaxies selected from the first year of Dark Energy Survey data. We consider a sample of over 1.3 million galaxies distributed over…

Cosmology and Nongalactic Astrophysics · Physics 2018-12-11 The Dark Energy Survey Collaboration , T. M. C. Abbott , F. B. Abdalla , A. Alarcon , S. Allam , F. Andrade-Oliveira , J. Annis , S. Avila , M. Banerji , N. Banik , K. Bechtol , G. M. Bernstein , R. A. Bernstein , E. Bertin , D. Brooks , E. Buckley-Geer , D. L. Burke , H. Camacho , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , R. Cawthon , K. C. Chan , M. Crocce , C. E. Cunha , C. B. D'Andrea , L. N. da Costa , C. Davis , J. De Vicente , D. L. DePoy , S. Desai , H. T. Diehl , P. Doel , A. Drlica-Wagner , T. F. Eifler , J. Elvin-Poole , J. Estrada , A. E. Evrard , B. Flaugher , P. Fosalba , J. Frieman , J. Garcia-Bellido , E. Gaztanaga , D. W. Gerdes , T. Giannantonio , D. Gruen , R. A. Gruendl , J. Gschwend , G. Gutierrez , W. G. Hartley , D. Hollowood , K. Honscheid , B. Hoyle , B. Jain , D. J. James , T. Jeltema , M. D. Johnson , S. Kent , N. Kokron , E. Krause , K. Kuehn , S. Kuhlmann , N. Kuropatkin , F. Lacasa , O. Lahav , M. Lima , H. Lin , M. A. G. Maia , M. Manera , J. Marriner , J. L. Marshall , P. Martini , P. Melchior , F. Menanteau , C. J. Miller , R. Miquel , J. J. Mohr , E. Neilsen , W. J. Percival , A. A. Plazas , A. Porredon , A. K. Romer , A. Roodman , R. Rosenfeld , A. J. Ross , E. Rozo , E. S. Rykoff , M. Sako , E. Sanchez , B. Santiago , V. Scarpine , R. Schindler , M. Schubnell , S. Serrano , I. Sevilla-Noarbe , E. Sheldon , R. C. Smith , M. Smith , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , M. A. Troxel , D. L. Tucker , V. Vikram , A. R. Walker , R. H. Wechsler , J. Weller , B. Yanny , Y. Zhang

We investigate if, for a fixed number density of targets and redshift, there is an optimal way to select a galaxy sample in order to measure the baryon acoustic oscillation (BAO) scale, which is used as a standard ruler to constrain the…

Cosmology and Nongalactic Astrophysics · Physics 2020-04-22 César Hernández-Aguayo , Marius Cautun , Alex Smith , Carlton M. Baugh , Baojiu Li

Massive elliptical galaxies align pointing their major axis towards each other in the structure of the Universe. Such alignments are well-described at large scales through a linear relation with respect to the tidal field of the large-scale…

Cosmology and Nongalactic Astrophysics · Physics 2023-06-28 Dennis van Dompseler , Christos Georgiou , Nora Elisa Chisari

Baryon acoustic oscillations (BAO), known as one of the largest cosmological objects, is now recognized as standard cosmological tool to measure geometric distances via the Alcock-Paczynski effect, by which the observed BAO exhibits…

Cosmology and Nongalactic Astrophysics · Physics 2014-06-03 Yong-Seon Song , Teppei Okumura , Atsushi Taruya

We present an analysis of the anisotropic redshift-space void-galaxy correlation in configuration space using the Sloan Digital Sky Survey extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 16 luminous red galaxy (LRG)…

The Baryon Acoustic Oscillations (BAO) imprinted a characteristic correlation length in the large-scale structure of the universe that can be used as a standard ruler for mapping out the cosmic expansion history. Here, we discuss the…

Cosmology and Nongalactic Astrophysics · Physics 2016-11-28 Jailson S. Alcaniz , Gabriela C. Carvalho , Armando Bernui , Joel C. Carvalho , Micol Benetti

We report a detection of the baryon acoustic oscillation (BAO) feature in the three-dimensional correlation function of the transmitted flux fraction in the \Lya forest of high-redshift quasars. The study uses 48,640 quasars in the redshift…

We present measurements of the Baryon Acoustic Oscillation (BAO) scale in redshift-space using the clustering of quasars. We consider a sample of 147,000 quasars from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) distributed…

We determine an optimized clustering statistic to be used for galaxy samples with significant redshift uncertainty, such as those that rely on photometric redshifts. To do so, we study the baryon acoustic oscillation (BAO) information…

We study the large-scale clustering of galaxies in the overlap region of the Baryon Oscillation Spectroscopic Survey (BOSS) CMASS sample and the WiggleZ Dark Energy Survey. We calculate the auto-correlation and cross-correlation functions…

Cosmology and Nongalactic Astrophysics · Physics 2015-12-02 Florian Beutler , Chris Blake , Jun Koda , Felipe Marin , Hee-Jong Seo , Antonio J. Cuesta , Donald P. Schneider

The Baryon Acoustic Oscillation (BAO) feature in the power spectrum of galaxies provides a standard ruler to measure the accelerated expansion of the Universe. To extract all available information about dark energy, it is necessary to…

We use the two-point correlation function to calculate the clustering properties of the recently completed SSRS2 survey. The redshift space correlation function for the magnitude-limited SSRS2 is given by xi(s)=(s/5.85 h-1 Mpc)^{-1.60} for…

Astrophysics · Physics 2010-05-25 C. N. A. Willmer , L. Nicolaci da Costa , P. S. Pellegrini

We define and characterise a sample of 1.3 million galaxies extracted from the first year of Dark Energy Survey data, optimised to measure Baryon Acoustic Oscillations in the presence of significant redshift uncertainties. The sample is…

We present results from fitting the baryon acoustic oscillation (BAO) signal in the correlation function obtained from the first application of reconstruction to a galaxy redshift survey, namely, the Sloan Digital Sky Survey (SDSS) Data…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Xiaoying Xu , Nikhil Padmanabhan , Daniel J. Eisenstein , Kushal T. Mehta , Antonio J. Cuesta

Anisotropic measurements of the Baryon Acoustic Oscillation (BAO) feature within a galaxy survey enable joint inference about the Hubble parameter $H(z)$ and angular diameter distance $D_A(z)$. These measurements are typically obtained from…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-01 Ashley J. Ross , Will J. Percival , Marc Manera

We develop a framework for self-consistently extracting cosmological information from the clustering of tracers in redshift space, $\textit{without}$ relying on model-dependent templates to describe the baryon acoustic oscillation (BAO)…

Cosmology and Nongalactic Astrophysics · Physics 2023-09-11 Aseem Paranjape , Ravi K. Sheth

A photometric redshift sample of Luminous Red Galaxies (hereafter LRGs) obtained from The DECam Legacy Survey (DECaLS) is analysed to probe cosmic distances by exploiting the wedge approach of the two-point correlation function. Although…

We present a clustering analysis of Luminous Red Galaxies (LRGs) using nearly 9 000 objects from the final catalogue of the 2dF-SDSS LRG And QSO (2SLAQ) Survey. We measure the redshift-space two-point correlation function, xi(s), at the…