The Pantheon+ Analysis: Cosmological Constraints

Dillon Brout; Dan Scolnic; Brodie Popovic; Adam G. Riess; Anthony Carr; Joe Zuntz; Rick Kessler; Tamara M. Davis; Samuel Hinton; David Jones; W. D'Arcy Kenworthy; Erik R. Peterson; Khaled Said; Georgie Taylor; Noor Ali; Patrick Armstrong; Pranav Charvu; Arianna Dwomoh; Cole Meldorf; Antonella Palmese; Helen Qu; Benjamin M. Rose; Bruno Sanchez; Christopher W. Stubbs; Maria Vincenzi; Charlotte M. Wood; Peter J. Brown; Rebecca Chen; Ken Chambers; David A. Coulter; Mi Dai; Georgios Dimitriadis; Alexei V. Filippenko; Ryan J. Foley; Saurabh W. Jha; Lisa Kelsey; Robert P. Kirshner; Anais Möller; Jessie Muir; Seshadri Nadathur; Yen-Chen Pan; Armin Rest; Cesar Rojas-Bravo; Masao Sako; Matthew R. Siebert; Mat Smith; Benjamin E. Stahl; Phil Wiseman

doi:10.3847/1538-4357/ac8e04

The Pantheon+ Analysis: Cosmological Constraints

Dillon Brout^*, Dan Scolnic, Brodie Popovic, Adam G. Riess, Anthony Carr, Joe Zuntz, Rick Kessler, Tamara M. Davis, Samuel Hinton, David Jones, W. D'Arcy Kenworthy, Erik R. Peterson, Khaled Said, Georgie Taylor, Noor Ali, Patrick Armstrong, Pranav Charvu, Arianna Dwomoh, Cole Meldorf, Antonella PalmeseHelen Qu, Benjamin M. Rose, Bruno Sanchez, Christopher W. Stubbs, Maria Vincenzi, Charlotte M. Wood, Peter J. Brown, Rebecca Chen, Ken Chambers, David A. Coulter, Mi Dai, Georgios Dimitriadis, Alexei V. Filippenko, Ryan J. Foley, Saurabh W. Jha, Lisa Kelsey, Robert P. Kirshner, Anais Möller, Jessie Muir, Seshadri Nadathur, Yen-Chen Pan, Armin Rest, Cesar Rojas-Bravo, Masao Sako, Matthew R. Siebert, Mat Smith, Benjamin E. Stahl, Phil Wiseman

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves of 1550 distinct Type Ia supernovae (SNe Ia) ranging in redshift from z = 0.001 to 2.26. This work features an increased sample size from the addition of multiple cross-calibrated photometric systems of SNe covering an increased redshift span, and improved treatments of systematic uncertainties in comparison to the original Pantheon analysis, which together result in a factor of 2 improvement in cosmological constraining power. For a flat ΛCDM model, we find ΩM = 0.334 ± 0.018 from SNe Ia alone. For a flat w0CDM model, we measure w0 = −0.90 ± 0.14 from SNe Ia alone, H0 = 73.5 ± 1.1 km s−1 Mpc−1 when including the Cepheid host distances and covariance (SH0ES), and w0 = $-{0.978}_{-0.031}^{+0.024}$ when combining the SN likelihood with Planck constraints from the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO); both w0 values are consistent with a cosmological constant. We also present the most precise measurements to date on the evolution of dark energy in a flat w0waCDM universe, and measure wa = $-{0.1}_{-2.0}^{+0.9}$ from Pantheon+ SNe Ia alone, H0 = 73.3 ± 1.1 km s−1 Mpc−1 when including SH0ES Cepheid distances, and wa = $-{0.65}_{-0.32}^{+0.28}$ when combining Pantheon+ SNe Ia with CMB and BAO data. Finally, we find that systematic uncertainties in the use of SNe Ia along the distance ladder comprise less than one-third of the total uncertainty in the measurement of H0 and cannot explain the present "Hubble tension" between local measurements and early universe predictions from the cosmological model.

Original language	English
Article number	110
Pages (from-to)	1-24
Number of pages	24
Journal	Astrophysical Journal
Volume	938
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/ac8e04
Publication status	Published - 19 Oct 2022

Keywords / Materials (for Non-textual outputs)

astro-ph.CO

Access to Document

10.3847/1538-4357/ac8e04Licence: Creative Commons: Attribution (CC-BY)

2202.04077v2Accepted author manuscript, 10.7 MBLicence: Creative Commons: Attribution (CC-BY)

https://arxiv.org/abs/2202.04077Licence: Creative Commons: Attribution (CC-BY)

Cite this

Brout, D., Scolnic, D., Popovic, B., Riess, A. G., Carr, A., Zuntz, J., Kessler, R., Davis, T. M., Hinton, S., Jones, D., Kenworthy, W. DA., Peterson, E. R., Said, K., Taylor, G., Ali, N., Armstrong, P., Charvu, P., Dwomoh, A., Meldorf, C., ... Wiseman, P. (2022). The Pantheon+ Analysis: Cosmological Constraints. Astrophysical Journal, 938(2), 1-24. Article 110. https://doi.org/10.3847/1538-4357/ac8e04

@article{67fa2e80ea914747bafc2e48fd938d56,

title = "The Pantheon+ Analysis: Cosmological Constraints",

abstract = "We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves of 1550 distinct Type Ia supernovae (SNe Ia) ranging in redshift from z = 0.001 to 2.26. This work features an increased sample size from the addition of multiple cross-calibrated photometric systems of SNe covering an increased redshift span, and improved treatments of systematic uncertainties in comparison to the original Pantheon analysis, which together result in a factor of 2 improvement in cosmological constraining power. For a flat ΛCDM model, we find ΩM = 0.334 ± 0.018 from SNe Ia alone. For a flat w0CDM model, we measure w0 = −0.90 ± 0.14 from SNe Ia alone, H0 = 73.5 ± 1.1 km s−1 Mpc−1 when including the Cepheid host distances and covariance (SH0ES), and w0 = \$-\{0.978\}\_\{-0.031\}\textasciicircum{}\{+0.024\}\$ when combining the SN likelihood with Planck constraints from the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO); both w0 values are consistent with a cosmological constant. We also present the most precise measurements to date on the evolution of dark energy in a flat w0waCDM universe, and measure wa = \$-\{0.1\}\_\{-2.0\}\textasciicircum{}\{+0.9\}\$ from Pantheon+ SNe Ia alone, H0 = 73.3 ± 1.1 km s−1 Mpc−1 when including SH0ES Cepheid distances, and wa = \$-\{0.65\}\_\{-0.32\}\textasciicircum{}\{+0.28\}\$ when combining Pantheon+ SNe Ia with CMB and BAO data. Finally, we find that systematic uncertainties in the use of SNe Ia along the distance ladder comprise less than one-third of the total uncertainty in the measurement of H0 and cannot explain the present {"}Hubble tension{"} between local measurements and early universe predictions from the cosmological model.",

keywords = "astro-ph.CO",

author = "Dillon Brout and Dan Scolnic and Brodie Popovic and Riess, \{Adam G.\} and Anthony Carr and Joe Zuntz and Rick Kessler and Davis, \{Tamara M.\} and Samuel Hinton and David Jones and Kenworthy, \{W. D'Arcy\} and Peterson, \{Erik R.\} and Khaled Said and Georgie Taylor and Noor Ali and Patrick Armstrong and Pranav Charvu and Arianna Dwomoh and Cole Meldorf and Antonella Palmese and Helen Qu and Rose, \{Benjamin M.\} and Bruno Sanchez and Stubbs, \{Christopher W.\} and Maria Vincenzi and Wood, \{Charlotte M.\} and Brown, \{Peter J.\} and Rebecca Chen and Ken Chambers and Coulter, \{David A.\} and Mi Dai and Georgios Dimitriadis and Filippenko, \{Alexei V.\} and Foley, \{Ryan J.\} and Jha, \{Saurabh W.\} and Lisa Kelsey and Kirshner, \{Robert P.\} and Anais M{\"o}ller and Jessie Muir and Seshadri Nadathur and Yen-Chen Pan and Armin Rest and Cesar Rojas-Bravo and Masao Sako and Siebert, \{Matthew R.\} and Mat Smith and Stahl, \{Benjamin E.\} and Phil Wiseman",

note = "34 Pages, 16 Figures, 7 Tables. Published in ApJ. Comments welcome. Papers and data release here: https://pantheonplussh0es.github.io",

year = "2022",

month = oct,

day = "19",

doi = "10.3847/1538-4357/ac8e04",

language = "English",

volume = "938",

pages = "1--24",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Brout, D, Scolnic, D, Popovic, B, Riess, AG, Carr, A, Zuntz, J, Kessler, R, Davis, TM, Hinton, S, Jones, D, Kenworthy, WDA, Peterson, ER, Said, K, Taylor, G, Ali, N, Armstrong, P, Charvu, P, Dwomoh, A, Meldorf, C, Palmese, A, Qu, H, Rose, BM, Sanchez, B, Stubbs, CW, Vincenzi, M, Wood, CM, Brown, PJ, Chen, R, Chambers, K, Coulter, DA, Dai, M, Dimitriadis, G, Filippenko, AV, Foley, RJ, Jha, SW, Kelsey, L, Kirshner, RP, Möller, A, Muir, J, Nadathur, S, Pan, Y-C, Rest, A, Rojas-Bravo, C, Sako, M, Siebert, MR, Smith, M, Stahl, BE & Wiseman, P 2022, 'The Pantheon+ Analysis: Cosmological Constraints', Astrophysical Journal, vol. 938, no. 2, 110, pp. 1-24. https://doi.org/10.3847/1538-4357/ac8e04

TY - JOUR

T1 - The Pantheon+ Analysis: Cosmological Constraints

AU - Brout, Dillon

AU - Scolnic, Dan

AU - Popovic, Brodie

AU - Riess, Adam G.

AU - Carr, Anthony

AU - Zuntz, Joe

AU - Kessler, Rick

AU - Davis, Tamara M.

AU - Hinton, Samuel

AU - Jones, David

AU - Kenworthy, W. D'Arcy

AU - Peterson, Erik R.

AU - Said, Khaled

AU - Taylor, Georgie

AU - Ali, Noor

AU - Armstrong, Patrick

AU - Charvu, Pranav

AU - Dwomoh, Arianna

AU - Meldorf, Cole

AU - Palmese, Antonella

AU - Qu, Helen

AU - Rose, Benjamin M.

AU - Sanchez, Bruno

AU - Stubbs, Christopher W.

AU - Vincenzi, Maria

AU - Wood, Charlotte M.

AU - Brown, Peter J.

AU - Chen, Rebecca

AU - Chambers, Ken

AU - Coulter, David A.

AU - Dai, Mi

AU - Dimitriadis, Georgios

AU - Filippenko, Alexei V.

AU - Foley, Ryan J.

AU - Jha, Saurabh W.

AU - Kelsey, Lisa

AU - Kirshner, Robert P.

AU - Möller, Anais

AU - Muir, Jessie

AU - Nadathur, Seshadri

AU - Pan, Yen-Chen

AU - Rest, Armin

AU - Rojas-Bravo, Cesar

AU - Sako, Masao

AU - Siebert, Matthew R.

AU - Smith, Mat

AU - Stahl, Benjamin E.

AU - Wiseman, Phil

N1 - 34 Pages, 16 Figures, 7 Tables. Published in ApJ. Comments welcome. Papers and data release here: https://pantheonplussh0es.github.io

PY - 2022/10/19

Y1 - 2022/10/19

N2 - We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves of 1550 distinct Type Ia supernovae (SNe Ia) ranging in redshift from z = 0.001 to 2.26. This work features an increased sample size from the addition of multiple cross-calibrated photometric systems of SNe covering an increased redshift span, and improved treatments of systematic uncertainties in comparison to the original Pantheon analysis, which together result in a factor of 2 improvement in cosmological constraining power. For a flat ΛCDM model, we find ΩM = 0.334 ± 0.018 from SNe Ia alone. For a flat w0CDM model, we measure w0 = −0.90 ± 0.14 from SNe Ia alone, H0 = 73.5 ± 1.1 km s−1 Mpc−1 when including the Cepheid host distances and covariance (SH0ES), and w0 = $-{0.978}_{-0.031}^{+0.024}$ when combining the SN likelihood with Planck constraints from the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO); both w0 values are consistent with a cosmological constant. We also present the most precise measurements to date on the evolution of dark energy in a flat w0waCDM universe, and measure wa = $-{0.1}_{-2.0}^{+0.9}$ from Pantheon+ SNe Ia alone, H0 = 73.3 ± 1.1 km s−1 Mpc−1 when including SH0ES Cepheid distances, and wa = $-{0.65}_{-0.32}^{+0.28}$ when combining Pantheon+ SNe Ia with CMB and BAO data. Finally, we find that systematic uncertainties in the use of SNe Ia along the distance ladder comprise less than one-third of the total uncertainty in the measurement of H0 and cannot explain the present "Hubble tension" between local measurements and early universe predictions from the cosmological model.

AB - We present constraints on cosmological parameters from the Pantheon+ analysis of 1701 light curves of 1550 distinct Type Ia supernovae (SNe Ia) ranging in redshift from z = 0.001 to 2.26. This work features an increased sample size from the addition of multiple cross-calibrated photometric systems of SNe covering an increased redshift span, and improved treatments of systematic uncertainties in comparison to the original Pantheon analysis, which together result in a factor of 2 improvement in cosmological constraining power. For a flat ΛCDM model, we find ΩM = 0.334 ± 0.018 from SNe Ia alone. For a flat w0CDM model, we measure w0 = −0.90 ± 0.14 from SNe Ia alone, H0 = 73.5 ± 1.1 km s−1 Mpc−1 when including the Cepheid host distances and covariance (SH0ES), and w0 = $-{0.978}_{-0.031}^{+0.024}$ when combining the SN likelihood with Planck constraints from the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO); both w0 values are consistent with a cosmological constant. We also present the most precise measurements to date on the evolution of dark energy in a flat w0waCDM universe, and measure wa = $-{0.1}_{-2.0}^{+0.9}$ from Pantheon+ SNe Ia alone, H0 = 73.3 ± 1.1 km s−1 Mpc−1 when including SH0ES Cepheid distances, and wa = $-{0.65}_{-0.32}^{+0.28}$ when combining Pantheon+ SNe Ia with CMB and BAO data. Finally, we find that systematic uncertainties in the use of SNe Ia along the distance ladder comprise less than one-third of the total uncertainty in the measurement of H0 and cannot explain the present "Hubble tension" between local measurements and early universe predictions from the cosmological model.

KW - astro-ph.CO

U2 - 10.3847/1538-4357/ac8e04

DO - 10.3847/1538-4357/ac8e04

M3 - Article

SN - 0004-637X

VL - 938

SP - 1

EP - 24

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 110

ER -

The Pantheon+ Analysis: Cosmological Constraints

Abstract

Keywords / Materials (for Non-textual outputs)

Access to Document

Fingerprint

Cite this