The Pantheon Analysis: Cosmological Constraints

Dillon Brout; Dan Scolnic; Brodie Popovic; Adam G Riess; Joe Zuntz; Rick Kessler; Anthony Carr; Tamara M Davis; Samuel Hinton; David Jones; D'Arcy W Kenworthy; Erik R Peterson; Khaled Said; Georgie Taylor; Noor Ali; Patrick Armstrong; Pranav Charvu; Arianna Dwomoh; Antonella Palmese; Helen Qu; Benjamin M Rose; Christopher W Stubbs; Maria Vincenzi; Charlotte 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, Joe Zuntz, Rick Kessler, Anthony Carr, Tamara M Davis, Samuel Hinton, David Jones, D'Arcy W Kenworthy, Erik R Peterson, Khaled Said, Georgie Taylor, Noor Ali, Patrick Armstrong, Pranav Charvu, Arianna Dwomoh, Antonella Palmese, Helen QuBenjamin M Rose, Christopher W Stubbs, Maria Vincenzi, Charlotte 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

Physics

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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, increased redshift span, and improved treatment of systematic uncertainties in comparison to the original Pantheon analysis and results in a factor of two improvement in cosmological constraining power. For a Flat$\Lambda$CDM model, we find $\Omega_M=0.334\pm0.018$ from SNe Ia alone. For a Flat$w_0$CDM model, we measure $w_0=-0.90\pm0.14$ from SNe Ia alone, H$_0=73.5\pm1.1$ km s$^{-1}$ Mpc$^{-1}$ when including the Cepheid host distances and covariance (SH0ES), and $w_0=-0.978^{ 0.024}_{-0.031}$ when combining the SN likelihood with constraints from the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO); both $w_0$ 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$w_0w_a$CDM universe, and measure $w_a=-0.1^{ 0.9}_{-2.0}$ from Pantheon alone, H$_0=73.3\pm1.1$ km s$^{-1}$ Mpc$^{-1}$ when including SH0ES, and $w_a=-0.65^{ 0.28}_{-0.32}$ when combining Pantheon 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 H$_0$ and cannot explain the present "Hubble tension" between local measurements and early-Universe predictions from the cosmological model. [Journal_ref: ApJ 938 110 (2022)]

Original language	English
Journal	ApJ
Volume	938
Issue number	110
DOIs	https://doi.org/10.3847/1538-4357/ac8e04
State	Published - 2022

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@article{fe8b95a33e85417796f80c38f8ced05b,

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, increased redshift span, and improved treatment of systematic uncertainties in comparison to the original Pantheon analysis and results in a factor of two improvement in cosmological constraining power. For a Flat\$\textbackslash{}Lambda\$CDM model, we find \$\textbackslash{}Omega\_M=0.334\textbackslash{}pm0.018\$ from SNe Ia alone. For a Flat\$w\_0\$CDM model, we measure \$w\_0=-0.90\textbackslash{}pm0.14\$ from SNe Ia alone, H\$\_0=73.5\textbackslash{}pm1.1\$ km s\$\textasciicircum{}\{-1\}\$ Mpc\$\textasciicircum{}\{-1\}\$ when including the Cepheid host distances and covariance (SH0ES), and \$w\_0=-0.978\textasciicircum{}\{ 0.024\}\_\{-0.031\}\$ when combining the SN likelihood with constraints from the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO); both \$w\_0\$ 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\$w\_0w\_a\$CDM universe, and measure \$w\_a=-0.1\textasciicircum{}\{ 0.9\}\_\{-2.0\}\$ from Pantheon alone, H\$\_0=73.3\textbackslash{}pm1.1\$ km s\$\textasciicircum{}\{-1\}\$ Mpc\$\textasciicircum{}\{-1\}\$ when including SH0ES, and \$w\_a=-0.65\textasciicircum{}\{ 0.28\}\_\{-0.32\}\$ when combining Pantheon 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 H\$\_0\$ and cannot explain the present {"}Hubble tension{"} between local measurements and early-Universe predictions from the cosmological model. [Journal\_ref: ApJ 938 110 (2022)]",

author = "Dillon Brout and Dan Scolnic and Brodie Popovic and Riess, \{Adam G\} and Joe Zuntz and Rick Kessler and Anthony Carr and Davis, \{Tamara M\} and Samuel Hinton and David Jones and Kenworthy, \{D'Arcy W\} and Peterson, \{Erik R\} and Khaled Said and Georgie Taylor and Noor Ali and Patrick Armstrong and Pranav Charvu and Arianna Dwomoh and Antonella Palmese and Helen Qu and Rose, \{Benjamin M\} and Stubbs, \{Christopher W\} and Maria Vincenzi and Charlotte Wood 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",

year = "2022",

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

language = "English",

volume = "938",

journal = "ApJ",

number = "110",

}

Brout, D, Scolnic, D, Popovic, B, Riess, AG, Zuntz, J, Kessler, R, Carr, A, Davis, TM, Hinton, S, Jones, D, Kenworthy, DAW, Peterson, ER, Said, K, Taylor, G, Ali, N, Armstrong, P, Charvu, P, Dwomoh, A, Palmese, A, Qu, H, Rose, BM, Stubbs, CW, Vincenzi, M, Wood, C, 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', ApJ, vol. 938, no. 110. 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 - Zuntz, Joe

AU - Kessler, Rick

AU - Carr, Anthony

AU - Davis, Tamara M

AU - Hinton, Samuel

AU - Jones, David

AU - Kenworthy, D'Arcy W

AU - Peterson, Erik R

AU - Said, Khaled

AU - Taylor, Georgie

AU - Ali, Noor

AU - Armstrong, Patrick

AU - Charvu, Pranav

AU - Dwomoh, Arianna

AU - Palmese, Antonella

AU - Qu, Helen

AU - Rose, Benjamin M

AU - Stubbs, Christopher W

AU - Vincenzi, Maria

AU - Wood, Charlotte

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

PY - 2022

Y1 - 2022

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, increased redshift span, and improved treatment of systematic uncertainties in comparison to the original Pantheon analysis and results in a factor of two improvement in cosmological constraining power. For a Flat$\Lambda$CDM model, we find $\Omega_M=0.334\pm0.018$ from SNe Ia alone. For a Flat$w_0$CDM model, we measure $w_0=-0.90\pm0.14$ from SNe Ia alone, H$_0=73.5\pm1.1$ km s$^{-1}$ Mpc$^{-1}$ when including the Cepheid host distances and covariance (SH0ES), and $w_0=-0.978^{ 0.024}_{-0.031}$ when combining the SN likelihood with constraints from the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO); both $w_0$ 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$w_0w_a$CDM universe, and measure $w_a=-0.1^{ 0.9}_{-2.0}$ from Pantheon alone, H$_0=73.3\pm1.1$ km s$^{-1}$ Mpc$^{-1}$ when including SH0ES, and $w_a=-0.65^{ 0.28}_{-0.32}$ when combining Pantheon 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 H$_0$ and cannot explain the present "Hubble tension" between local measurements and early-Universe predictions from the cosmological model. [Journal_ref: ApJ 938 110 (2022)]

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, increased redshift span, and improved treatment of systematic uncertainties in comparison to the original Pantheon analysis and results in a factor of two improvement in cosmological constraining power. For a Flat$\Lambda$CDM model, we find $\Omega_M=0.334\pm0.018$ from SNe Ia alone. For a Flat$w_0$CDM model, we measure $w_0=-0.90\pm0.14$ from SNe Ia alone, H$_0=73.5\pm1.1$ km s$^{-1}$ Mpc$^{-1}$ when including the Cepheid host distances and covariance (SH0ES), and $w_0=-0.978^{ 0.024}_{-0.031}$ when combining the SN likelihood with constraints from the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO); both $w_0$ 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$w_0w_a$CDM universe, and measure $w_a=-0.1^{ 0.9}_{-2.0}$ from Pantheon alone, H$_0=73.3\pm1.1$ km s$^{-1}$ Mpc$^{-1}$ when including SH0ES, and $w_a=-0.65^{ 0.28}_{-0.32}$ when combining Pantheon 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 H$_0$ and cannot explain the present "Hubble tension" between local measurements and early-Universe predictions from the cosmological model. [Journal_ref: ApJ 938 110 (2022)]

UR - http://arxiv.org/abs/2202.04077v2

U2 - 10.3847/1538-4357/ac8e04

DO - 10.3847/1538-4357/ac8e04

M3 - Article

VL - 938

JO - ApJ

JF - ApJ

IS - 110

ER -

The Pantheon Analysis: Cosmological Constraints

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