CaltechAUTHORS
Published December 1, 2021 | Version Accepted Version + Published
Journal Article Open

Constraining Cosmic Microwave Background Temperature Evolution With Sunyaev–Zel'Dovich Galaxy Clusters from the Atacama Cosmology Telescope

Creators

  • 1. ROR icon Johns Hopkins University
  • 2. ROR icon University of Toronto
  • 3. ROR icon Cornell University
  • 4. ROR icon Sapienza University of Rome
  • 5. ROR icon Canadian Institute for Theoretical Astrophysics
  • 6. ROR icon Cardiff University
  • 7. ROR icon University of Pennsylvania
  • 8. ROR icon Princeton University
  • 9. ROR icon Lawrence Berkeley National Laboratory
  • 10. ROR icon University of California, Berkeley
  • 11. ROR icon University of Southern California
  • 12. ROR icon University of Pittsburgh
  • 13. ROR icon University of British Columbia
  • 14. ROR icon University of KwaZulu-Natal
  • 15. ROR icon University of Chicago
  • 16. ROR icon University of Michigan–Ann Arbor
  • 17. ROR icon University of Milano-Bicocca
  • 18. ROR icon Haverford College
  • 19. ROR icon Stanford University
  • 20. ROR icon Kavli Institute for Particle Astrophysics and Cosmology
  • 21. ROR icon California Institute of Technology
  • 22. ROR icon Stony Brook University
  • 23. ROR icon Pontificial Catholic University of Valparaiso
  • 24. ROR icon Arizona State University
  • 25. ROR icon Goddard Space Flight Center
  • 26. ROR icon Massachusetts Institute of Technology

Abstract

The Sunyaev–Zel'dovich (SZ) effect introduces a specific distortion of the blackbody spectrum of the cosmic microwave background (CMB) radiation when it scatters off hot gas in clusters of galaxies. The frequency dependence of the distortion is only independent of the cluster redshift when the evolution of the CMB radiation is adiabatic. Using 370 clusters within the redshift range 0.07 ≲ z ≲ 1.4 from the largest SZ-selected cluster sample to date from the Atacama Cosmology Telescope, we provide new constraints on the deviation of CMB temperature evolution from the standard model α = 0.017_(-0.032)^(+0.029), where T(z) = T₀(1 + z)^(1-α). This result is consistent with no deviation from the standard adiabatic model. Combining it with previous, independent data sets we obtain a joint constraint of α = −0.001 ± 0.012. Attributing deviation from adiabaticity to the decay of dark energy, this result constrains its effective equation of state w_(eff) = -0.998_(-0.010)^(+0.008).

Additional Information

© 2021. The American Astronomical Society. Received 2021 June 23; revised 2021 September 11; accepted 2021 September 13; published 2021 November 26. We thank Jens Chluba and the anonymous reviewer, whose comments have improved this work. ACT was supported by the U.S. National Science Foundation through awards AST-0408698, AST-0965625, and AST-1440226 for the ACT project, as well as awards PHY-0355328, PHY-0855887, and PHY-1214379. Funding was also provided by Princeton University, the University of Pennsylvania, and a Canada Foundation for Innovation (CFI) award to UBC. ACT operates in the Parque Astronómico Atacama in northern Chile under the auspices of the Chilean National Agency for Research and Development (ANID). The development of multichroic detectors and lenses was supported by NASA grants NNX13AE56G and NNX14AB58G. Detector research at NIST was supported by the NIST Innovations in Measurement Science program. Computations were performed on Hippo at the University of KwaZulu-Natal; data products used in this work also relied on computations on Cori at NERSC as part of the CMB Community allocation, on the Niagara supercomputer at the SciNet HPC Consortium, and on Feynman and Tiger at Princeton Research Computing. SciNet is funded by the CFI under the auspices of Compute Canada, the Government of Ontario, the Ontario Research Fund–Research Excellence, and the University of Toronto. A.D.H. is grateful for support from the Sutton Family Chair in Science, Christianity and Cultures. SKC acknowledges support from NSF award AST-2001866. R.H. acknowledges funding from the NSERC Discovery Grants program, CIFAR Azrieli Global Scholars program and the Alfred P. Sloan Foundation. K.M. and M.H. acknowledge support from the National Research Foundation of South Africa (grant number 112132). N.S. acknowledges support from NSF (grant number AST-1907657). C.S. acknowledges support from the Agencia Nacional de Investigación y Desarrollo (ANID) under FONDECYT (grant number 11191125). Z.X. is supported by the Gordon and Betty Moore Foundation. Software: Astropy (Astropy Collaboration et al. 2013), NumPy (van der Walt et al. 2011), SciPy (Virtanen et al. 2020) Matplotlib (Hunter 2007), Cython (Behnel et al. 2011), emcee (Foreman-Mackey et al. 2013), GPy (GPy 2012).

Attached Files

Published - Li_2021_ApJ_922_136.pdf

Accepted Version - 2106.12467.pdf

Files

2106.12467.pdf

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Additional details

Additional titles

Alternative title
Constraining CMB temperature evolution with Sunyaev-Zel'dovich galaxy clusters from the Atacama Cosmology Telescope

Identifiers

Eprint ID
112205
Resolver ID
CaltechAUTHORS:20211203-204701771

Related works

Describes
https://arxiv.org/abs/2106.12467 (URL)

Funding

NSF
AST-0408698
NSF
AST-0965625
NSF
AST-1440226
NSF
PHY-0355328
NSF
PHY-0855887
NSF
PHY-1214379
Princeton University
University of Pennsylvania
Canada Foundation for Innovation
NASA
NNX13AE56G
NASA
NNX14AB58G
Compute Canada
Ontario Research Fund-Research Excellence
University of Toronto
Sutton Family Chair in Science, Christianity and Cultures
NSF
AST-2001866
Natural Sciences and Engineering Research Council of Canada (NSERC)
Canadian Institute for Advanced Research (CIFAR)
Alfred P. Sloan Foundation
National Research Foundation (South Africa)
112132
NSF
AST-1907657
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)
11191125
Gordon and Betty Moore Foundation

Dates

Created
2021-12-03
Created from EPrint's datestamp field
Updated
2021-12-03
Created from EPrint's last_modified field