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

Chang, C.

doi:10.1103/PhysRevLett.115.051301

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

Journal Article · Wed Jul 29 00:00:00 EDT 2015 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.115.051301· OSTI ID:1223216

Chang, C. ^[1]

ETH Zurich (Switzerland). et al.

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 also 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. Finally, we summarize our key findings in this Letter; the detailed methodology and tests for systematics are presented in a companion paper.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: DES Collaboration

Grant/Contract Number:: AC02-07CH11359; SC00112704

OSTI ID:: 1223216

Alternate ID(s):: OSTI ID: 1204703; OSTI ID: 1226043

Report Number(s):: FERMILAB-PUB-15-343-AE; BNL-108403-2015-JA; arXiv eprint number arXiv:1505.01871

Journal Information:: Physical Review Letters, Vol. 115, Issue 5; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 39 works

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