Dark Energy Survey Year 3 Results: Three-point shear correlations and mass aperture moments

L. F. Secco , M. Jarvis , B. Jain , C. Chang , M. Gatti , J. Frieman , S. Adhikari , A. Alarcon , A. Amon , K. Bechtol , M. R. Becker , G. M. Bernstein , J. Blazek , A. Campos , A. Carnero Rosell , M. Carrasco Kind , A. Choi , J. Cordero , J. Derose , S. Dodelson , C. Doux , A. Drlica-Wagner , S. Everett , G. Giannini , D. Gruen , R. A. Gruendl , I. Harrison , W. G. Hartley , K. Herner , E. Krause , N. Maccrann , J. Mccullough , J. Myles , A. Navarro-Alsina , J. Prat , R. P. Rollins , S. Samuroff , C. Sánchez , I. Sevilla-Noarbe , E. Sheldon , M. A. Troxel , D. Zeurcher , M. Aguena , F. Andrade-Oliveira , J. Annis , D. Bacon , E. Bertin (1) , S. Bocquet , D. Brooks , D. L. Burke , J. Carretero , F. J. Castander , M. Crocce , L. N. da Costa , M. E. S. Pereira , J. de Vicente , H. T. Diehl , P. Doel , K. Eckert , I. Ferrero , B. Flaugher , D. Friedel , J. García-Bellido , G. Gutierrez , S. R. Hinton , D. L. Hollowood , K. Honscheid , D. Huterer , K. Kuehn , N. Kuropatkin , M. A. G. Maia , J. L. Marshall , F. Menanteau , R. Miquel , J. J. Mohr , R. Morgan , J. Muir , F. Paz-Chinchón , A. Pieres , A. A. Plazas Malagón , M. Rodriguez-Monroy , A. Roodman , E. Sanchez , S. Serrano , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , C. To , J. Weller

1 IAP - Institut d'Astrophysique de Paris

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 15.0 σ . 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.

Keywords: Astrophysics - Cosmology and Nongalactic Astrophysics

Domains: Sciences of the Universe [physics]

L. F. Secco, M. Jarvis, B. Jain, C. Chang, M. Gatti, et al.. Dark Energy Survey Year 3 Results: Three-point shear correlations and mass aperture moments. Physical Review D, 2022, 105, ⟨10.1103/PhysRevD.105.103537⟩. ⟨insu-03748267⟩