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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Wide-field lensing mass maps from Dark Energy Survey science verification data: Methodology and detailed analysis
Physical Review D - Particles, Fields, Gravitation and Cosmology, Volume 92, No. 2, Article 022006, Year 2015
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Description
Weak gravitational lensing allows one to reconstruct the spatial distribution of the projected mass density across the sky. These "mass maps" provide a powerful tool for studying cosmology as they probe both luminous and dark matter. In this paper, we present a weak lensing mass map reconstructed from shear measurements in a 139deg2 area from the Dark Energy Survey (DES) science verification data. We compare the distribution of mass with that of the foreground distribution of galaxies and clusters. The overdensities in the reconstructed map correlate well with the distribution of optically detected clusters. We demonstrate that candidate superclusters and voids along the line of sight can be identified, exploiting the tight scatter of the cluster photometric redshifts. We cross-correlate the mass map with a foreground magnitude-limited galaxy sample from the same data. Our measurement gives results consistent with mock catalogs from N-body simulations that include the primary sources of statistical uncertainties in the galaxy, lensing, and photo-z catalogs. The statistical significance of the cross-correlation is at the 6.8σ level with 20 arcminute smoothing. We find that the contribution of systematics to the lensing mass maps is generally within measurement uncertainties. In this work, we analyze less than 3% of the final area that will be mapped by the DES; the tools and analysis techniques developed in this paper can be applied to forthcoming larger data sets from the survey. © 2015 American Physical Society.
Authors & Co-Authors
Vikram, Vinu
United States, Lemont
Argonne National Laboratory
United States, Philadelphia
University of Pennsylvania
Chang, Chihway
Switzerland, Zurich
Eth Zürich
Jain, Bhuvnesh
United States, Philadelphia
University of Pennsylvania
Bacon, David J.
United Kingdom, Portsmouth
University of Portsmouth
Amara, Adam
Switzerland, Zurich
Eth Zürich
Becker, Matthew R.
United States, Palo Alto
Stanford University
Bernstein, Gary M.
United States, Philadelphia
University of Pennsylvania
Bonnett, Christopher
Spain, Cerdanyola Del Valles
Institut de Física D'altes Energies, Bellaterra
Bridle, Sarah L.
United Kingdom, Manchester
The University of Manchester
Brout, Dillon J.
United States, Philadelphia
University of Pennsylvania
Busha, Michael T.
United States, Palo Alto
Stanford University
Frieman, Joshua A.
United States, Chicago
The University of Chicago
United States, Batavia
Fermi National Accelerator Laboratory
Gaztañaga, E.
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Hartley, William G.
Switzerland, Zurich
Eth Zürich
Jarvis, Michael
United States, Philadelphia
University of Pennsylvania
Kacprzak, Tomasz
Switzerland, Zurich
Eth Zürich
Kovács, András
Spain, Cerdanyola Del Valles
Institut de Física D'altes Energies, Bellaterra
Lahav, Ofer
United Kingdom, London
University College London
Leistedt, Boris
United Kingdom, London
University College London
Lin, Huan
United States, Batavia
Fermi National Accelerator Laboratory
Melchior, Peter
United States, Columbus
The Ohio State University
Peiris, Hiranya V.
United Kingdom, London
University College London
Rozo, Eduardo
United States, Tucson
The University of Arizona
Rykoff, Eli S.
United States, Palo Alto
Stanford University
United States, Menlo Park
Slac National Accelerator Laboratory
Sánchez, Carles
Spain, Cerdanyola Del Valles
Institut de Física D'altes Energies, Bellaterra
Sheldon, Erin Scott
United States, Upton
Brookhaven National Laboratory
Troxel, Michael A.
United Kingdom, Manchester
The University of Manchester
Wechsler, Risa H.
United States, Palo Alto
Stanford University
United States, Menlo Park
Slac National Accelerator Laboratory
Zuntz, Joe A.
United Kingdom, Manchester
The University of Manchester
Abbott, Timothy M.C.
Chile, La Serena
Cerro Tololo Inter American Observatory
Abdalla, Fillipe Batoni
United Kingdom, London
University College London
Armstrong, Robert E.
United States, Philadelphia
University of Pennsylvania
Banerji, Manda
United Kingdom, Cambridge
University of Cambridge
Bauer, Anne H.
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Benoit-Lévy, Aurélien
United Kingdom, London
University College London
Bertin, Emmanuel
France, Paris
Sorbonne Université
Brooks, David D.
United Kingdom, London
University College London
Buckley-Geer, Elizabeth J.
United States, Batavia
Fermi National Accelerator Laboratory
Burke, David L.
United States, Palo Alto
Stanford University
United States, Menlo Park
Slac National Accelerator Laboratory
Capozzi, Diego
United Kingdom, Portsmouth
University of Portsmouth
Carnero Rosell, A. R.
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Brazil, Sao Cristovao
Observatório Nacional
Carrasco-Kind, Matias
United States, Urbana
University of Illinois Urbana-champaign
Castander, Francisco Javier J.
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Crocce, Martín
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Cunha, Carlos E.
Germany, Gerlingen
Robert Bosch Gmbh
D'Andrea, Chris B.
United Kingdom, Portsmouth
University of Portsmouth
da Costa, Luiz Nicolaci
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Brazil, Sao Cristovao
Observatório Nacional
DePoy, Darren L.
United States, College Station
Texas A&m University
Desai, Shantanu
Germany, Munich
Ludwig-maximilians-universität München
Diehl, H. Thomas
United States, Batavia
Fermi National Accelerator Laboratory
Dietrich, Jörg P.
Germany, Munich
Ludwig-maximilians-universität München
Germany, Garching Bei Munchen
Exzellenzcluster Origins
Estrada, Juan Cruz
United States, Batavia
Fermi National Accelerator Laboratory
Evrard, August E.
United States, Ann Arbor
University of Michigan, Ann Arbor
Fausti-Neto, Angelo
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Fernández, Enrique
Spain, Cerdanyola Del Valles
Institut de Física D'altes Energies, Bellaterra
Flaugher, Brenna L.
United States, Batavia
Fermi National Accelerator Laboratory
Fosalba, Pablo
Spain, Cerdanyola Del Valles
Universitat Autònoma de Barcelona
Gerdes, David W.
United States, Ann Arbor
University of Michigan, Ann Arbor
Gruen, Daniel
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Germany, Munich
Ludwig-maximilians-universität München
Gruendl, Robert A.
United States, Urbana
University of Illinois Urbana-champaign
Honscheiď, Klaus
United States, Urbana
University of Illinois Urbana-champaign
James, David J.
Chile, La Serena
Cerro Tololo Inter American Observatory
Kent, Stephen M.
United States, Batavia
Fermi National Accelerator Laboratory
Kuehn, Kyler W.
Australia
Australian Astronomical Observatory
Kuropatkin, Nikolay P.
United States, Batavia
Fermi National Accelerator Laboratory
Li, Ting S.
United States, College Station
Texas A&m University
Maia, Marcioa Antonio Geimba
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Brazil, Sao Cristovao
Observatório Nacional
Makler, Martín
Brazil, Rio de Janeiro
Centro Brasileiro de Pesquisas Físicas
March, Marisa Cristina
United States, Philadelphia
University of Pennsylvania
Marshall, Jennifer L.
United States, College Station
Texas A&m University
Martini, Paul
United States, Columbus
The Ohio State University
Merritt, K. W.B.
United States, Batavia
Fermi National Accelerator Laboratory
Miller, Christopher J.
United States, Ann Arbor
University of Michigan, Ann Arbor
Miquel, Ramon
Spain, Cerdanyola Del Valles
Institut de Física D'altes Energies, Bellaterra
Spain, Barcelona
Institució Catalana de Recerca I Estudis Avançats
Neilsen, Eric H.
United States, Batavia
Fermi National Accelerator Laboratory
Nichol, Robert C.
United Kingdom, Portsmouth
University of Portsmouth
Nord, Brian D.
United States, Batavia
Fermi National Accelerator Laboratory
Ogando, R. L.C.
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Brazil, Sao Cristovao
Observatório Nacional
Plazas, Andreas Alejandro
United States, Upton
Brookhaven National Laboratory
United States, Pasadena
California Institute of Technology
Römer, Anita Kathy
United Kingdom, Brighton
University of Sussex
Roodman, Aaron J.
United States, Palo Alto
Stanford University
United States, Menlo Park
Slac National Accelerator Laboratory
Sánchez, Eusebio J.
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Scarpine, Victor E.
United States, Batavia
Fermi National Accelerator Laboratory
Sevilla, Ignacio
United States, Urbana
University of Illinois Urbana-champaign
Spain, Madrid
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
Smith, Robert Chris
Chile, La Serena
Cerro Tololo Inter American Observatory
Soares-Santos, Marcelle
United States, Batavia
Fermi National Accelerator Laboratory
Sobreira, Flávia
United States, Batavia
Fermi National Accelerator Laboratory
Brazil, Rio de Janeiro
Laboratório Interinstitucional de E-astronomia
Suchyta, Eric
United States, Columbus
The Ohio State University
Swanson, Mollye E.C.
United States, Urbana
University of Illinois Urbana-champaign
Tarlè, Gregory G.
Germany, Munich
Ludwig-maximilians-universität München
Thaler, Jon J.
United States, Urbana
University of Illinois Urbana-champaign
Thomas, Daniel B.
United Kingdom, Portsmouth
University of Portsmouth
Walker, Alistair R.
Chile, La Serena
Cerro Tololo Inter American Observatory
Weller, Jochen
Germany, Munich
Ludwig-maximilians-universität München
Germany, Garching Bei Munchen
Exzellenzcluster Origins
Germany, Garching Bei Munchen
Max Planck Institute for Extraterrestrial Physics
Statistics
Citations: 49
Authors: 94
Affiliations: 33
Identifiers
Doi:
10.1103/PhysRevD.92.022006
ISSN:
15507998
Study Design
Cross Sectional Study
Study Approach
Quantitative