Weak lensing magnification in the Dark Energy Survey Science Verification data

• Published in: Monthly notices of the Royal Astronomical Society 2018-05, Vol.476 (1), p.1071-1085
• Main Authors: Garcia-Fernandez, M, Sanchez, E, Sevilla-Noarbe, I, Suchyta, E, Huff, E M, Gaztanaga, E, Aleksić, J, Ponce, R, Castander, F J, Hoyle, B, Abbott, T M C, Abdalla, F B, Allam, S, Annis, J, Benoit-Lévy, A, Bernstein, G M, Bertin, E, Brooks, D, Buckley-Geer, E, Burke, D L, Carnero Rosell, A, Carrasco Kind, M, Carretero, J, Crocce, M, Cunha, C E, D'Andrea, C B, da Costa, L N, DePoy, D L, Desai, S, Diehl, H T, Eifler, T F, Evrard, A E, Fernandez, E, Flaugher, B, Fosalba, P, Frieman, J, García-Bellido, J, Gerdes, D W, Giannantonio, T, Gruen, D, Gruendl, R A, Gschwend, J, Gutierrez, G, James, D J, Jarvis, M, Kirk, D, Krause, E, Kuehn, K, Kuropatkin, N, Lahav, O, Lima, M, MacCrann, N, Maia, M A G, March, M, Marshall, J L, Melchior, P, Miquel, R, Mohr, J J, Plazas, A A, Romer, A K, Roodman, A, Rykoff, E S, Scarpine, V, Schubnell, M, Smith, R C, Soares-Santos, M, Sobreira, F, Tarle, G, Thomas, D, Walker, A R, Wester, W, (The DES Collaboration)
• Format: Article
• Language: English
• Subjects: ASTRONOMY AND ASTROPHYSICS; Astrophysics; gravitational lensing: weak; large-scale structure of Universe; methods: data analysis; Physics; techniques: photometric
• ISSN: 0035-8711; 1365-2966
• DOI: 10.1093/mnras/sty282

Abstract In this paper, the effect of weak lensing magnification on galaxy number counts is studied by cross-correlating the positions of two galaxy samples, separated by redshift, using the Dark Energy Survey Science Verification data set. This analysis is carried out for galaxies that are selected only by its photometric redshift. An extensive analysis of the systematic effects, using new methods based on simulations is performed, including a Monte Carlo sampling of the selection function of the survey.