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Weak lensing of Type Ia Supernovae from the Dark Energy Survey

Publication ,  Journal Article
MacAulay, E; Bacon, D; Nichol, RC; Davis, TM; Elvin-Poole, J; Brout, D; Carollo, D; Glazebrook, K; Hinton, SR; Lewis, GF; Lidman, C; Möller, A ...
Published in: Monthly Notices of the Royal Astronomical Society
January 1, 2020

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.

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Published In

Monthly Notices of the Royal Astronomical Society

DOI

EISSN

1365-2966

ISSN

0035-8711

Publication Date

January 1, 2020

Volume

496

Issue

3

Start / End Page

4051 / 4059

Related Subject Headings

  • Astronomy & Astrophysics
  • 5109 Space sciences
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 0201 Astronomical and Space Sciences
 

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MacAulay, E., Bacon, D., Nichol, R. C., Davis, T. M., Elvin-Poole, J., Brout, D., … Weller, J. (2020). Weak lensing of Type Ia Supernovae from the Dark Energy Survey. Monthly Notices of the Royal Astronomical Society, 496(3), 4051–4059. https://doi.org/10.1093/MNRAS/STAA1852
MacAulay, E., D. Bacon, R. C. Nichol, T. M. Davis, J. Elvin-Poole, D. Brout, D. Carollo, et al. “Weak lensing of Type Ia Supernovae from the Dark Energy Survey.” Monthly Notices of the Royal Astronomical Society 496, no. 3 (January 1, 2020): 4051–59. https://doi.org/10.1093/MNRAS/STAA1852.
MacAulay E, Bacon D, Nichol RC, Davis TM, Elvin-Poole J, Brout D, et al. Weak lensing of Type Ia Supernovae from the Dark Energy Survey. Monthly Notices of the Royal Astronomical Society. 2020 Jan 1;496(3):4051–9.
MacAulay, E., et al. “Weak lensing of Type Ia Supernovae from the Dark Energy Survey.” Monthly Notices of the Royal Astronomical Society, vol. 496, no. 3, Jan. 2020, pp. 4051–59. Scopus, doi:10.1093/MNRAS/STAA1852.
MacAulay E, Bacon D, Nichol RC, Davis TM, Elvin-Poole J, Brout D, Carollo D, Glazebrook K, Hinton SR, Lewis GF, Lidman C, Möller A, Sako M, Scolnic D, Smith M, Sommer NE, Tucker BE, Abbott TMC, Aguena M, Annis J, Avila S, Bertin E, Bhargava S, Brooks D, Burke DL, Rosell AC, Kind MC, Carretero J, Castander FJ, Costanzi M, Da Costa LND, Desai S, Diehl HT, Doel P, Flaugher B, Foley RJ, García-Bellido J, Gaztanaga E, Gerdes DW, Gruen D, Gruendl RA, Gschwend J, Gutierrez G, Hollowood DL, Honscheid K, Huterer D, James DJ, Kuehn K, Kuropatkin N, Lahav O, Lima M, Maia MAG, Marshall JL, Melchior P, Menanteau F, Palmese A, Plazas AA, Romer AK, Roodman A, Sanchez E, Scarpine V, Schubnell M, Serrano S, Sevilla-Noarbe I, Soares-Santos M, Suchyta E, Swanson MEC, Tarle G, Varga TN, Walker AR, Weller J. Weak lensing of Type Ia Supernovae from the Dark Energy Survey. Monthly Notices of the Royal Astronomical Society. 2020 Jan 1;496(3):4051–4059.
Journal cover image

Published In

Monthly Notices of the Royal Astronomical Society

DOI

EISSN

1365-2966

ISSN

0035-8711

Publication Date

January 1, 2020

Volume

496

Issue

3

Start / End Page

4051 / 4059

Related Subject Headings

  • Astronomy & Astrophysics
  • 5109 Space sciences
  • 5107 Particle and high energy physics
  • 5101 Astronomical sciences
  • 0201 Astronomical and Space Sciences