@article{64e6e0ba5c824432af02dabb75eaec7c,
title = "Weak lensing of Type Ia Supernovae from the Dark Energy Survey",
abstract = "We consider the effects of weak gravitational lensing on observations of 196 spectroscopically confirmed Type Ia Supernovae (SNe Ia) from years 1 to 3 of the Dark Energy Survey (DES).We simultaneously measure both the angular correlation function and the non-Gaussian skewness caused by weak lensing. This approach has the advantage of being insensitive to the intrinsic dispersion of SNe Ia magnitudes. We model the amplitude of both effects as a function of σ8, and find σ8 =1.2+0.9-0.8. We also apply our method to a subsample of 488 SNe from the Joint Light-curve Analysis (JLA; chosen to match the redshift range we use for this work), and find σ8 =0.8+1.1-0.7. The comparable uncertainty in σ8 between DES-SN and the larger number of SNe from JLA highlights the benefits of homogeneity of the DES-SN sample, and improvements in the calibration and data analysis.",
keywords = "Cosmological parameters, Cosmology: Observations, Large-scale structure of the universe",
author = "{DES Collaboration} and E. MacAulay and D. Bacon and Nichol, {R. C.} and Davis, {T. M.} and J. Elvin-Poole and D. Brout and D. Carollo and K. Glazebrook and Hinton, {S. R.} and Lewis, {G. F.} and C. Lidman and A. M{\"o}ller and M. Sako and D. Scolnic and M. Smith and Sommer, {N. E.} and Tucker, {B. E.} and Abbott, {T. M.C.} and M. Aguena and J. Annis and S. Avila and E. Bertin and S. Bhargava and D. Brooks and Burke, {D. L.} and Rosell, {A. Carnero} and Kind, {M. Carrasco} and J. Carretero and Castander, {F. J.} and M. Costanzi and {Da Costa}, {L. N.D.} and S. Desai and Diehl, {H. T.} and P. Doel and B. Flaugher and Foley, {R. J.} and J. Garc{\'i}a-Bellido and E. Gaztanaga and Gerdes, {D. W.} and D. Gruen and Gruendl, {R. A.} and J. Gschwend and G. Gutierrez and Hollowood, {D. L.} and K. Honscheid and D. Huterer and James, {D. J.} and K. Kuehn and N. Kuropatkin and F. Menanteau",
note = "Funding Information: Based in part on observations at Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy under a cooperative agreement with the National Science Foundation. Publisher Copyright: {\textcopyright} 2020 Oxford University Press. All rights reserved.",
year = "2020",
doi = "10.1093/MNRAS/STAA1852",
language = "English (US)",
volume = "496",
pages = "4051--4059",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "3",
}