Wide-Field Lensing Mass Maps from DES Science Verification Data [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. High Energy Physics Division, 2015. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- Article numbers 051,301 : digital, PDF file
- Additional Creators:
- Brookhaven National Laboratory, United States. Department of Energy. High Energy Physics Division, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- We present a mass map reconstructed from weak gravitational lensing shear measurements over 139 deg<sup>2</sup> from the Dark Energy Survey (DES) 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 super-clusters 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 arcminute smoothing. These measurements are consistent with simulated galaxy catalogs based on ΛCDM Nbody simulations, suggesting 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.
- Published through SciTech Connect., 07/29/2015., "bnl--108403-2015-ja", "KA2301020", Physical Review Letters 115 5 ISSN 0031-9007 AM, and Chang C.; Vikram, V.; Jain, B.
- Funding Information:
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