학술논문
Dark Energy Survey Year 3 Results: Three-point shear correlations and mass aperture moments
Document Type
article
Author
Secco, LF; Jarvis, M; Jain, B; Chang, C; Gatti, M; Frieman, J; Adhikari, S; Alarcon, A; Amon, A; Bechtol, K; Becker, MR; Bernstein, GM; Blazek, J; Campos, A; Rosell, A Carnero; Kind, M Carrasco; Choi, A; Cordero, J; DeRose, J; Dodelson, S; Doux, C; Drlica-Wagner, A; Everett, S; Giannini, G; Gruen, D; Gruendl, RA; Harrison, I; Hartley, WG; Herner, K; Krause, E; MacCrann, N; McCullough, J; Myles, J; Navarro-Alsina, A; Prat, J; Rollins, RP; Samuroff, S; Sánchez, C; Sevilla-Noarbe, I; Sheldon, E; Troxel, MA; Zeurcher, D; Aguena, M; Andrade-Oliveira, F; Annis, J; Bacon, D; Bertin, E; Bocquet, S; Brooks, D; Burke, DL; Carretero, J; Castander, FJ; Crocce, M; da Costa, LN; Pereira, MES; De Vicente, J; Diehl, HT; Doel, P; Eckert, K; Ferrero, I; Flaugher, B; Friedel, D; García-Bellido, J; Gutierrez, G; Hinton, SR; Hollowood, DL; Honscheid, K; Huterer, D; Kuehn, K; Kuropatkin, N; Maia, MAG; Marshall, JL; Menanteau, F; Miquel, R; Mohr, JJ; Morgan, R; Muir, J; Paz-Chinchón, F; Pieres, A; Malagón, AA Plazas; Rodriguez-Monroy, M; Roodman, A; Sanchez, E; Serrano, S; Suchyta, E; Swanson, MEC; Tarle, G; Thomas, D; To, C; Weller, J
Source
Physical Review D. 105(10)
Subject
Language
Abstract
We present high signal-to-noise measurements of three-point shear correlations and the third moment of the mass aperture statistic using the first 3 years of data from the Dark Energy Survey. We additionally obtain the first measurements of the configuration and scale dependence of the four three-point shear correlations which carry cosmological information. With the third-order mass aperture statistic, we present tomographic measurements over angular scales of 4 to 60 arcminutes with a combined statistical significance of 15.0σ. Using the tomographic information and measuring also the second-order mass aperture, we additionally obtain a skewness parameter and its redshift evolution. We find that the amplitudes and scale-dependence of these shear 3pt functions are in qualitative agreement with measurements in a mock galaxy catalog based on N-body simulations, indicating promise for including them in future cosmological analyses. We validate our measurements by showing that B-modes, parity-violating contributions and PSF modeling uncertainties are negligible, and determine that the measured signals are likely to be of astrophysical and gravitational origin.