Wide-Field Lensing Mass Maps from Dark Energy Survey Science Verification Data.

Published

Journal Article

We present a mass map reconstructed from weak gravitational lensing shear measurements over 139  deg2 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.

Full Text

Duke Authors

Cited Authors

  • Chang, C; Vikram, V; Jain, B; Bacon, D; Amara, A; Becker, MR; Bernstein, G; Bonnett, C; Bridle, S; Brout, D; Busha, M; Frieman, J; Gaztanaga, E; Hartley, W; Jarvis, M; Kacprzak, T; Kovács, A; Lahav, O; Lin, H; Melchior, P; Peiris, H; Rozo, E; Rykoff, E; Sánchez, C; Sheldon, E; Troxel, MA; Wechsler, R; Zuntz, J; Abbott, T; Abdalla, FB; Allam, S; Annis, J; Bauer, AH; Benoit-Lévy, A; Brooks, D; Buckley-Geer, E; Burke, DL; Capozzi, D; Carnero Rosell, A; Carrasco Kind, M; Castander, FJ; Crocce, M; D'Andrea, CB; Desai, S; Diehl, HT; Dietrich, JP; Doel, P; Eifler, TF; Evrard, AE; Fausti Neto, A; Flaugher, B; Fosalba, P; Gruen, D; Gruendl, RA; Gutierrez, G; Honscheid, K; James, D; Kent, S; Kuehn, K; Kuropatkin, N; Maia, MAG; March, M; Martini, P; Merritt, KW; Miller, CJ; Miquel, R; Neilsen, E; Nichol, RC; Ogando, R; Plazas, AA; Romer, AK; Roodman, A; Sako, M; Sanchez, E; Sevilla, I; Smith, RC; Soares-Santos, M; Sobreira, F; Suchyta, E; Tarle, G; Thaler, J; Thomas, D; Tucker, D; Walker, AR

Published Date

  • July 29, 2015

Published In

Volume / Issue

  • 115 / 5

Start / End Page

  • 051301 -

PubMed ID

  • 26274409

Pubmed Central ID

  • 26274409

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.115.051301

Language

  • eng