First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters

arxiv: 1811.02374 · v4 · pith:MM6FGOL3new · submitted 2018-11-06 · 🌌 astro-ph.CO

First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters

T. M. C. Abbott , S. Allam , P. Andersen , C. Angus , J. Asorey , A. Avelino , S. Avila , B. A. Bassett

show 136 more authors

K. Bechtol G. M. Bernstein E. Bertin D. Brooks D. Brout P. Brown D. L. Burke J. Calcino A. Carnero Rosell D. Carollo M. Carrasco Kind J. Carretero R. Casas F. J. Castander R. Cawthon P. Challis M. Childress A. Clocchiatti C. E. Cunha C. B. D'Andrea L. N. da Costa C. Davis T. M. Davis J. De Vicente D. L. DePoy S. Desai H. T. Diehl P. Doel A. Drlica-Wagner T. F. Eifler A. E. Evrard E. Fernandez A. V. Filippenko D. A. Finley B. Flaugher R. J. Foley P. Fosalba J. Frieman L. Galbany J. Garcia-Bellido E. Gaztanaga T. Giannantonio K. Glazebrook D. A. Goldstein S. Gonzalez-Gaitan D. Gruen R. A. Gruendl J. Gschwend R. R. Gupta G. Gutierrez W. G. Hartley S. R. Hinton D. L. Hollowood K. Honscheid J. K. Hoormann B. Hoyle D. J. James T. Jeltema M. W. G. Johnson M. D. Johnson E. Kasai S. Kent R. Kessler A. G. Kim R. P. Kirshner E. Kovacs E. Krause R. Kron K. Kuehn S. Kuhlmann N. Kuropatkin O. Lahav J. Lasker G. F. Lewis T. S. Li C. Lidman M. Lima H. Lin E. Macaulay M. A. G. Maia K. S. Mandel M. March J. Marriner J. L. Marshall P. Martini F. Menanteau C. J. Miller R. Miquel V. Miranda J. J. Mohr E. Morganson D. Muthukrishna A. M\"oller E. Neilsen R. C. Nichol B. Nord P. Nugent R. L. C. Ogando A. Palmese Y.-C. Pan A. A. Plazas M. Pursiainen A. K. Romer A. Roodman E. Rozo E. S. Rykoff M. Sako E. Sanchez V. Scarpine R. Schindler M. Schubnell D. Scolnic S. Serrano I. Sevilla-Noarbe R. Sharp M. Smith M. Soares-Santos F. Sobreira N. E. Sommer H. Spinka E. Suchyta M. Sullivan E. Swann G. Tarle D. Thomas R. C. Thomas M. A. Troxel B. E. Tucker S. A. Uddin A. R. Walker W. Wester P. Wiseman R. C. Wolf B. Yanny B. Zhang Y. Zhang (DES Collaboration)

This is my paper

classification 🌌 astro-ph.CO

keywords constraintscosmologicaldarkenergyfindfirstflatmodel

0 comments p. Extension

pith:MM6FGOL3 Add to your LaTeX paper

What is a Pith Number?

\usepackage{pith}
\pithnumber{MM6FGOL3}

Prints a linked pith:MM6FGOL3 badge after your title and writes the identifier into PDF metadata. Compiles on arXiv with no extra files. Learn more

read the original abstract

We present the first cosmological parameter constraints using measurements of type Ia supernovae (SNe Ia) from the Dark Energy Survey Supernova Program (DES-SN). The analysis uses a subsample of 207 spectroscopically confirmed SNe Ia from the first three years of DES-SN, combined with a low-redshift sample of 122 SNe from the literature. Our "DES-SN3YR" result from these 329 SNe Ia is based on a series of companion analyses and improvements covering SN Ia discovery, spectroscopic selection, photometry, calibration, distance bias corrections, and evaluation of systematic uncertainties. For a flat LCDM model we find a matter density Omega_m = 0.331 +_ 0.038. For a flat wCDM model, and combining our SN Ia constraints with those from the cosmic microwave background (CMB), we find a dark energy equation of state w = -0.978 +_ 0.059, and Omega_m = 0.321 +_ 0.018. For a flat w0waCDM model, and combining probes from SN Ia, CMB and baryon acoustic oscillations, we find w0 = -0.885 +_ 0.114 and wa = -0.387 +_ 0.430. These results are in agreement with a cosmological constant and with previous constraints using SNe Ia (Pantheon, JLA).

This paper has not been read by Pith yet.

discussion (0)

Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
astro-ph.CO 2021-05 accept novelty 6.0

DES Y3 3x2pt analysis constrains S8=0.776±0.017 and Ωm=0.339±0.032 in flat ΛCDM, consistent with Planck CMB results at p=0.13-0.48.
Barrow holographic dark energy interacting model in the presence of radiation and matter
gr-qc 2025-07 unverdicted novelty 4.0

Numerical study of interacting Barrow holographic dark energy in non-flat universes with radiation, showing EoS transitions and higher fitted H0 values that may address Hubble tension.