Published August 15, 2021
| Accepted Version + Published
Journal Article
Open
The Atacama Cosmology Telescope: Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with SDSS DR15 galaxies
- Creators
- Calafut, V.
- Gallardo, P. A.
- Vavagiakis, E. M.
- Amodeo, S.
- Aiola, S.
- Austermann, J. E.
- Battaglia, N.
- Battistelli, E. S.
- Beall, J. A.
- Bean, R.
- Bond, J. R.
- Calabrese, E.
- Choi, S. K.
- Cothard, N. F.
- Devlin, M. J.
- Duell, C. J.
- Duff, S. M.
- Duivenvoorden, A. J.
- Dunkley, J.
- Dunner, R.
- Ferraro, S.
- Guan, Y.
- Hill, J. C.
- Hilton, G. C.
- Hilton, M.
- Hložek, R.
- Huber, Z. B.
- Hubmayr, J.
- Huffenberger, K. M.
- Hughes, J. P.
- Koopman, B. J.
- Kosowsky, A.
- Li, Y.
- Lokken, M.
- Madhavacheril, M.
- McMahon, J.
- Moodley, K.
- Naess, S.
- Nati, F.
- Newburgh, L. B.
- Niemack, M. D.
- Page, L. A.
- Partridge, B.
- Schaan, E.
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Schillaci, A.
- Sifón, C.
- Spergel, D. N.
- Staggs, S. T.
- Ullom, J. N.
- Vale, L. R.
- Van Engelen, A.
- Van Lanen, J.
- Wollack, E. J.
- Xu, Z.
Abstract
We present a 5.4σ detection of the pairwise kinematic Sunyaev-Zeldovich (kSZ) effect using Atacama Cosmology Telescope (ACT) and Planck CMB observations in combination with Luminous Red Galaxy samples from the Sloan Digital Sky Survey (SDSS) DR15 catalog. Results are obtained using three ACT CMB maps: co-added 150 and 98 GHz maps, combining observations from 2008–2018 (ACT DR5), which overlap with SDSS DR15 over 3,700 sq. deg., and a component-separated map using night-time only observations from 2014–2015 (ACT DR4), overlapping with SDSS DR15 over 2,089 sq. deg. Comparisons of the results from these three maps provide consistency checks in relation to potential frequency-dependent foreground contamination. A total of 343,647 galaxies are used as tracers to identify and locate galaxy groups and clusters from which the kSZ signal is extracted using aperture photometry. We consider the impact of various aperture photometry assumptions and covariance estimation methods on the signal extraction. Theoretical predictions of the pairwise velocities are used to obtain best-fit, mass-averaged, optical depth estimates for each of five luminosity-selected tracer samples. A comparison of the kSZ-derived optical depth measurements obtained here to those derived from the thermal SZ effect for the same sample is presented in a companion paper.
Additional Information
© 2021 American Physical Society. (Received 4 February 2021; accepted 27 May 2021; published 6 August 2021) V. C. and R. B. acknowledge support from DOE Grant No. DE-SC0011838, NASA ATP Grant No. 80NSSC18K0695, NASA ROSES Grant No. 12-EUCLID12-0004 and funding related to the Roman High Latitude Survey Science Investigation Team. E. M. V. acknowledges support from the NSF Graduate Research Fellowship Program under Grant No. DGE-1650441. N. B. acknowledges support from NSF Grant No. AST-1910021, NASA ATP Grant No. 80NSSC18K0695 and from the Research and Technology Development fund at the Jet Propulsion Laboratory through the project entitled "Mapping the Baryonic Majority." E. C. acknowledges support from the STFC Ernest Rutherford Fellowship ST/M004856/2 and STFC Consolidated Grant ST/S00033X/1, and from the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation program (Grant Agreement No. 849169). S. K. C. acknowledges support from NSF Grant AST-2001866. J. D. is supported through NSF Grant No. AST-1814971. R. D. thanks CONICYT for grant BASAL CATA AFB-170002. R. H. acknowledges funding from the CIFAR Azrieli Global Scholars program and the Alfred P. Sloan Foundation. J. P. H. acknowledges funding for SZ cluster studies from NSF Grant No. AST-1615657. K. M. acknowledges support from the National Research Foundation of South Africa. M. D. N. acknowledges support from NSF CAREER Grant 1454881. C. S. acknowledges support from the Agencia Nacional de Investigación y Desarrollo (ANID) through FONDECYT Iniciación Grant No. 11191125. Z. X. is supported by the Gordon and Betty Moore Foundation. This work was supported by the U.S. National Science Foundation through Grants No. AST-0408698, No. AST-0965625 and No. AST-1440226 for the ACT project, as well as Grants No. PHY-0355328, No. PHY-0855887 and No. 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 Comisión Nacional de Investigación Científica y Tecnológica de Chile (CONICYT). Canadian co-authors acknowledge support from the Natural Sciences and Engineering Research Council of Canada. The Dunlap Institute is funded through an endowment established by the David Dunlap family and the University of Toronto. Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High Performance Computing at the University of Utah. SDSS-IV is managed by the Astrophysical Research Consortium for the Participating Institutions of the SDSS Collaboration including the Brazilian Participation Group, the Carnegie Institution for Science, Carnegie Mellon University, Center for Astrophysics—Harvard & Smithsonian, the Chilean Participation Group, the French Participation Group, Instituto de Astrofísica de Canarias, The Johns Hopkins University, Kavli Institute for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo, the Korean Participation Group, Lawrence Berkeley National Laboratory, Leibniz Institut für Astrophysik Potsdam (AIP), Max-Planck-Institut für Astronomie (MPIA Heidelberg), Max-Planck-Institut für Astrophysik (MPA Garching), Max-Planck-Institut für Extraterrestrische Physik (MPE), National Astronomical Observatories of China, New Mexico State University, New York University, University of Notre Dame, Observatário Nacional/MCTI, The Ohio State University, Pennsylvania State University, Shanghai Astronomical Observatory, United Kingdom Participation Group, Universidad Nacional Autónoma de México, University of Arizona, University of Colorado Boulder, University of Oxford, University of Portsmouth, University of Utah, University of Virginia, University of Washington, University of Wisconsin, Vanderbilt University, and Yale University.Attached Files
Published - PhysRevD.104.043502.pdf
Accepted Version - 2101.08374.pdf
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Additional details
- Eprint ID
- 110618
- Resolver ID
- CaltechAUTHORS:20210830-203807652
- DE-SC0011838
- Department of Energy
- 80NSSC18K0695
- NASA
- 12-EUCLID12-0004
- NASA
- DGE-1650441
- NSF Graduate Research Fellowship
- AST-1910021
- NSF
- JPL Research and Technology Development Fund
- ST/M004856/2
- Science and Technology Facilities Council (STFC)
- ST/S00033X/1
- Science and Technology Facilities Council (STFC)
- 849169
- European Research Council (ERC)
- AST-2001866
- NSF
- AST-1814971
- NSF
- AFB-170002
- BASAL-CATA
- Canadian Institute for Advanced Research (CIFAR)
- Alfred P. Sloan Foundation
- AST-1615657
- NSF
- National Research Foundation (South Africa)
- AST-1454881
- NSF
- 11191125
- Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)
- Gordon and Betty Moore Foundation
- AST-0408698
- NSF
- AST-0965625
- NSF
- AST-1440226
- NSF
- PHY-0355328
- NSF
- PHY-0855887
- NSF
- PHY-1214379
- NSF
- Princeton University
- University of Pennsylvania
- Canada Foundation for Innovation
- Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- David Dunlap Family
- University of Toronto
- Participating Institutions
- Created
-
2021-08-31Created from EPrint's datestamp field
- Updated
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2021-08-31Created from EPrint's last_modified field