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We present galaxy-galaxy lensing measurements from 1321 sq. deg. of the Dark Energy Survey (DES) Year 1 (Y1) data. The lens sample consists of a selection of 660,000 red galaxies with high-precision photometric redshifts, known as redMaGiC,…

Cosmology and Nongalactic Astrophysics · Physics 2018-09-05 J. Prat , C. Sánchez , Y. Fang , D. Gruen , J. Elvin-Poole , N. Kokron , L. F. Secco , B. Jain , R. Miquel , N. MacCrann , M. A. Troxel , A. Alarcon , D. Bacon , G. M. Bernstein , J. Blazek , R. Cawthon , C. Chang , M. Crocce , C. Davis , J. De Vicente , J. P. Dietrich , A. Drlica-Wagner , O. Friedrich , M. Gatti , W. G. Hartley , B. Hoyle , E. M. Huff , M. Jarvis , M. M. Rau , R. P. Rollins , A. J. Ross , E. Rozo , E. S. Rykoff , S. Samuroff , E. Sheldon , T. N. Varga , P. Vielzeuf , J. Zuntz , T. M. C. Abbott , F. B. Abdalla , S. Allam , J. Annis , K. Bechtol , A. Benoit-Lévy , E. Bertin , D. Brooks , E. Buckley-Geer , D. L. Burke , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , C. E. Cunha , C. B. D'Andrea , L. N. da Costa , S. Desai , H. T. Diehl , S. Dodelson , T. F. Eifler , E. Fernandez , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , E. Gaztanaga , D. W. Gerdes , T. Giannantonio , D. A. Goldstein , R. A. Gruendl , J. Gschwend , G. Gutierrez , K. Honscheid , D. J. James , T. Jeltema , M. W. G. Johnson , M. D. Johnson , D. Kirk , E. Krause , K. Kuehn , S. Kuhlmann , O. Lahav , T. S. Li , M. Lima , M. A. G. Maia , M. March , J. L. Marshall , P. Martini , P. Melchior , F. Menanteau , J. J. Mohr , R. C. Nichol , B. Nord , A. A. Plazas , A. K. Romer , A. Roodman , M. Sako , E. Sanchez , V. Scarpine , R. Schindler , M. Schubnell , I. Sevilla-Noarbe , M. Smith , R. C. Smith , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , D. L. Tucker , V. Vikram , A. R. Walker , R. H. Wechsler , B. Yanny , Y. Zhang

In this work we present the galaxy clustering measurements of the two DES lens galaxy samples: a magnitude-limited sample optimized for the measurement of cosmological parameters, MagLim, and a sample of luminous red galaxies selected with…

Cosmology and Nongalactic Astrophysics · Physics 2022-02-09 M. Rodríguez-Monroy , N. Weaverdyck , J. Elvin-Poole , M. Crocce , A. Carnero Rosell , F. Andrade-Oliveira , S. Avila , K. Bechtol , G. M. Bernstein , J. Blazek , H. Camacho , R. Cawthon , J. De Vicente , J. DeRose , S. Dodelson , S. Everett , X. Fang , I. Ferrero , A. Ferté , O. Friedrich , E. Gaztanaga , G. Giannini , R. A. Gruendl , W. G. Hartley , K. Herner , E. M. Huff , M. Jarvis , E. Krause , N. MacCrann , J. Mena-Fernández , J. Muir , S. Pandey , Y. Park , A. Porredon , J. Prat , R. Rosenfeld , A. J. Ross , E. Rozo , E. S. Rykoff , E. Sanchez , D. Sanchez Cid , I. Sevilla-Noarbe , M. Tabbutt , C. To , E. L. Wagoner , R. H. Wechsler , M. Aguena , S. Allam , A. Amon , J. Annis , D. Bacon , E. Baxter , E. Bertin , S. Bhargava , D. Brooks , D. L. Burke , M. Carrasco Kind , J. Carretero , F. J. Castander , A. Choi , C. Conselice , M. Costanzi , L. N. da Costa , M. E. S. Pereira , S. Desai , H. T. Diehl , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , T. Giannantonio , D. Gruen , J. Gschwend , G. Gutierrez , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. Huterer , B. Jain , D. J. James , K. Kuehn , N. Kuropatkin , M. Lima , M. A. G. Maia , M. March , J. L. Marshall , P. Melchior , F. Menanteau , C. J. Miller , R. Miquel , J. J. Mohr , R. Morgan , A. Palmese , F. Paz-Chinchón , A. Pieres , A. A. Plazas Malagón , A. Roodman , V. Scarpine , S. Serrano , M. Smith , M. Soares-Santos , E. Suchyta , G. Tarle , D. Thomas , T. N. Varga

The next generation of galaxy surveys will observe millions of galaxies over large volumes of the universe. These surveys are expensive both in time and cost, raising questions regarding the optimal investment of this time and money. In…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 P. Paykari , A. H. Jaffe

Weak gravitational lensing is responsible for the shearing and magnification of the images of high-redshift sources due to the presence of intervening matter. The distortions are due to fluctuations in the gravitational potential, and are…

Astrophysics · Physics 2009-09-29 D. Munshi , P. Valageas , L. Van Waerbeke , A. Heavens

We conduct a detailed analysis of the photometric redshift requirements for the proposed Dark Energy Survey (DES) using two sets of mock galaxy simulations and an artificial neural network code - ANNz. In particular, we examine how optical…

Astrophysics · Physics 2010-03-26 Manda Banerji , Filipe B. Abdalla , Ofer Lahav , Huan Lin

Aims: We assess the sensitivity of void shapes to the nature of dark energy that was pointed out in recent studies. We investigate whether or not void shapes are useable as an observational probe in galaxy redshift surveys. We focus on the…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-10 E. G. Patrick Bos , Rien van de Weygaert , Klaus Dolag , Valeria Pettorino

Extragalactic science and cosmology with Stage IV galaxy surveys will rely almost exclusively on redshift measurements derived solely from photometry, which are subject to systematic and statistical uncertainties with numerous analysis…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-01 Bryan R Scott , Alex I Malz , Robert Sorba

Galaxy surveys probe both structure formation and the expansion rate, making them promising avenues for understanding the dark universe. Photometric surveys accurately map the 2D distribution of galaxy positions and shapes in a given…

Cosmology and Nongalactic Astrophysics · Physics 2017-06-19 Samuel Passaglia , Alessandro Manzotti , Scott Dodelson

We present the calibration of the Dark Energy Survey Year 1 (DES Y1) weak lensing source galaxy redshift distributions from clustering measurements. By cross-correlating the positions of source galaxies with luminous red galaxies selected…

Synthetic source injection (SSI), the insertion of sources into pixel-level on-sky images, is a powerful method for characterizing object detection and measurement in wide-field, astronomical imaging surveys. Within the Dark Energy Survey…

We present clustering redshift measurements for Dark Energy Survey (DES) lens sample galaxies to be used in weak gravitational lensing and galaxy clustering studies. To perform this measurement, we cross-correlate with spectroscopic…

The combination of multiple cosmological probes can produce measurements of cosmological parameters much more stringent than those possible with any individual probe. We examine the combination of two highly correlated probes of late-time…

Cosmology and Nongalactic Astrophysics · Physics 2017-03-08 Donnacha Kirk , Ofer Lahav , Sarah Bridle , Stephanie Jouvel , Filipe B. Abdalla , Joshua A. Frieman

We present measurements of weak gravitational lensing cosmic shear two-point statistics using Dark Energy Survey Science Verification data. We demonstrate that our results are robust to the choice of shear measurement pipeline, either ngmix…

Cosmology and Nongalactic Astrophysics · Physics 2016-07-28 M. R. Becker , M. A. Troxel , N. MacCrann , E. Krause , T. F. Eifler , O. Friedrich , A. Nicola , A. Refregier , A. Amara , D. Bacon , G. M. Bernstein , C. Bonnett , S. L. Bridle , M. T. Busha , C. Chang , S. Dodelson , B. Erickson , A. E. Evrard , J. Frieman , E. Gaztanaga , D. Gruen , W. Hartley , B. Jain , M. Jarvis , T. Kacprzak , D. Kirk , A. Kravtsov , B. Leistedt , E. S. Rykoff , C. Sabiu , C. Sanchez , H. Seo , E. Sheldon , R. H. Wechsler , J. Zuntz , T. Abbott , F. B. Abdalla , S. Allam , R. Armstrong , M. Banerji , A. H. Bauer , A. Benoit-Levy , E. Bertin , D. Brooks , E. Buckley-Geer , D. L. Burke , D. Capozzi , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , M. Crocce , C. E. Cunha , C. B. D'Andrea , L. N. da Costa , D. L. DePoy , S. Desai , H. T. Diehl , J. P. Dietrich , P. Doel , A. Fausti Neto , E. Fernandez , D. A. Finley , B. Flaugher , P. Fosalba , D. W. Gerdes , R. A. Gruendl , G. Gutierrez , K. Honscheid , D. J. James , K. Kuehn , N. Kuropatkin , O. Lahav , T. S. Li , M. Lima , M. A. G. Maia , M. March , P. Martini , P. Melchior , C. J. Miller , R. Miquel , J. J. Mohr , R. C. Nichol , B. Nord , R. Ogando , A. A. Plazas , K. Reil , A. K. Romer , A. Roodman , M. Sako , E. Sanchez , V. Scarpine , M. Schubnell , I. Sevilla-Noarbe , R. C. Smith , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , J. Thaler , D. Thomas , V. Vikram , A. R. Walker , The DES Collaboration

The observing strategy of a galaxy survey influences the degree to which its resulting data can be used to accomplish any science goal. LSST is thus seeking metrics of observing strategies for multiple science cases in order to optimally…

Instrumentation and Methods for Astrophysics · Physics 2021-04-19 Alex I. Malz , François Lanusse , John Franklin Crenshaw , Melissa L. Graham

We present cosmological constraints from the abundance of galaxy clusters selected via the thermal Sunyaev-Zel'dovich (SZ) effect in South Pole Telescope (SPT) data with a simultaneous mass calibration using weak gravitational lensing data…

Cosmology and Nongalactic Astrophysics · Physics 2024-06-24 S. Bocquet , S. Grandis , L. E. Bleem , M. Klein , J. J. Mohr , T. Schrabback , T. M. C. Abbott , P. A. R. Ade , M. Aguena , A. Alarcon , S. Allam , S. W. Allen , O. Alves , A. Amon , A. J. Anderson , J. Annis , B. Ansarinejad , J. E. Austermann , S. Avila , D. Bacon , M. Bayliss , J. A. Beall , K. Bechtol , M. R. Becker , A. N. Bender , B. A. Benson , G. M. Bernstein , S. Bhargava , F. Bianchini , M. Brodwin , D. Brooks , L. Bryant , A. Campos , R. E. A. Canning , J. E. Carlstrom , A. Carnero Rosell , M. Carrasco Kind , J. Carretero , F. J. Castander , R. Cawthon , C. L. Chang , C. Chang , P. Chaubal , R. Chen , H. C. Chiang , A. Choi , T-L. Chou , R. Citron , C. Corbett Moran , J. Cordero , M. Costanzi , T. M. Crawford , A. T. Crites , L. N. da Costa , M. E. S. Pereira , C. Davis , T. M. Davis , J. DeRose , S. Desai , T. de Haan , H. T. Diehl , M. A. Dobbs , S. Dodelson , C. Doux , A. Drlica-Wagner , K. Eckert , J. Elvin-Poole , S. Everett , W. Everett , I. Ferrero , A. Ferté , A. M. Flores , J. Frieman , J. Gallicchio , J. García-Bellido , M. Gatti , E. M. George , G. Giannini , M. D. Gladders , D. Gruen , R. A. Gruendl , N. Gupta , G. Gutierrez , N. W. Halverson , I. Harrison , W. G. Hartley , K. Herner , S. R. Hinton , G. P. Holder , D. L. Hollowood , W. L. Holzapfel , K. Honscheid , J. D. Hrubes , N. Huang , J. Hubmayr , E. M. Huff , D. Huterer , K. D. Irwin , D. J. James , M. Jarvis , G. Khullar , K. Kim , L. Knox , R. Kraft , E. Krause , K. Kuehn , N. Kuropatkin , F. Kéruzoré , O. Lahav , A. T. Lee , P. -F. Leget , D. Li , H. Lin , A. Lowitz , N. MacCrann , G. Mahler , A. Mantz , J. L. Marshall , J. McCullough , M. McDonald , J. J. McMahon , J. Mena-Fernández , F. Menanteau , S. S. Meyer , R. Miquel , J. Montgomery , J. Myles , T. Natoli , A. Navarro-Alsina , J. P. Nibarger , G. I. Noble , V. Novosad , R. L. C. Ogando , Y. Omori , S. Padin , S. Pandey , P. Paschos , S. Patil , A. Pieres , A. A. Plazas Malagón , A. Porredon , J. Prat , C. Pryke , M. Raveri , C. L. Reichardt , J. Roberson , R. P. Rollins , C. Romero , A. Roodman , J. E. Ruhl , E. S. Rykoff , B. R. Saliwanchik , L. Salvati , C. Sánchez , E. Sanchez , D. Sanchez Cid , A. Saro , K. K. Schaffer , L. F. Secco , I. Sevilla-Noarbe , K. Sharon , E. Sheldon , T. Shin , C. Sievers , G. Smecher , M. Smith , T. Somboonpanyakul , M. Sommer , B. Stalder , A. A. Stark , J. Stephen , V. Strazzullo , E. Suchyta , G. Tarle , C. To , M. A. Troxel , C. Tucker , I. Tutusaus , T. N. Varga , T. Veach , J. D. Vieira , A. Vikhlinin , A. von der Linden , G. Wang , N. Weaverdyck , J. Weller , N. Whitehorn , W. L. K. Wu , B. Yanny , V. Yefremenko , B. Yin , M. Young , J. A. Zebrowski , Y. Zhang , H. Zohren , J. Zuntz

The effective redshift distribution $n(z)$ of galaxies is a critical component in the study of weak gravitational lensing. Here, we introduce a new method for determining $n(z)$ for weak lensing surveys based on high-quality redshifts and…

The angular power spectrum is a powerful statistic for analysing cosmological signals imprinted in the clustering of matter. However, current galaxy and quasar surveys cover limited portions of the sky, and are contaminated by systematics…

Cosmology and Nongalactic Astrophysics · Physics 2013-10-29 Boris Leistedt , Hiranya V. Peiris , Daniel J. Mortlock , Aurélien Benoit-Lévy , Andrew Pontzen

We present cosmological constraints from Dark Energy Survey Year 3 (DES Y3) weak lensing data using persistent homology, a topological data analysis technique that tracks how features like clusters and voids evolve across density…

Upcoming wide-field spectroscopic surveys will observe galaxies in a range of cosmic web environments in and around galaxy clusters. In this paper, we test and quantify how successfully we will be able to identify the environment of…

Wide-field cosmological surveys provide hundreds of thousands of spectroscopically confirmed galaxy groups and clusters, valuable for tracing baryonic matter distribution. However, controlling systematics in identifying host dark matter…

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