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Wide-field lensing mass maps from DES Science Verification Data

Research output: Contribution to journalArticle

  • C. Chang
  • V. Vikram
  • B. Jain
  • M. R. Becker
  • G. Bernstein
  • C. Bonnett
  • S. Bridle
  • D. Brout
  • M. Busha
  • J. Frieman
  • E. Gaztanaga
  • W. Hartley
  • M. Jarvis
  • T. Kacprzak
  • A. Kovacs
  • O. Lahav
  • H. Lin
  • P. Melchior
  • H. Peiris
  • E. Rozo
  • E. Rykoff
  • C. Sanchez
  • E. Sheldon
  • M. A. Troxel
  • R. Wechsler
  • J. Zuntz
  • T. Abbott
  • F. B. Abdalla
  • S. Allam
  • J. Annis
  • A. H. Bauer
  • A. Benoit-Levy
  • D. Brooks
  • E. Buckley-Geer
  • D. L. Burke
  • D. Capozzi
  • A. Carnero Rosell
  • M. Carrasco Kind
  • F. J. Castander
  • M. Crocce
  • C. B. D'Andrea
  • S. Desai
  • H. T. Diehl
  • J. P. Dietrich
  • P. Doel
  • T. F. Eifler
  • A. E. Evrard
  • A. Fausti Neto
  • B. Flaugher
  • P. Fosalba
  • D. Gruen
  • R. A. Gruendl
  • G. Gutierrez
  • K. Honscheid
  • D. James
  • S. Kent
  • K. Kuehn
  • N. Kuropatkin
  • M. A. G. Maia
  • M. March
  • P. Martini
  • K. W. Merritt
  • C. J. Miller
  • R. Miquel
  • E. Neilsen
  • R. Ogando
  • A. A. Plazas
  • A. K. Romer
  • A. Roodman
  • M. Sako
  • E. Sanchez
  • I. Sevilla
  • R. C. Smith
  • M. Soares-Santos
  • F. Sobreira
  • E. Suchyta
  • G. Tarle
  • J. Thaler
  • D. Tucker
  • A. R. Walker
We present a mass map reconstructed from weak gravitational lensing shear measurements over 139  deg 2   from the Dark Energy Survey science verification data. The mass map probes both luminous and dark matter, thus providing a tool for studying cosmology. We find good agreement between the mass map and the distribution of massive galaxy clusters identified using a red-sequence cluster finder. Potential candidates for superclusters and voids are identified using these maps. We measure the cross-correlation between the mass map and a magnitude-limited foreground galaxy sample and find a detection at the 6.8σ  level with 20 arc min smoothing. These measurements are consistent with simulated galaxy catalogs based on N  -body simulations from a cold dark matter model with a cosmological constant. This suggests low systematics uncertainties in the map. We summarize our key findings in this Letter; the detailed methodology and tests for systematics are presented in a companion paper.
Original languageEnglish
Article number051301
Pages (from-to)051301
JournalPhysical Review Letters
Volume115
Issue number5
DOIs
Publication statusPublished - 31 Jul 2015

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