CaltechAUTHORS
Published May 2021 | Version Submitted + Published
Journal Article Open

Strong detection of the CMB lensing and galaxy weak lensing cross-correlation from ACT-DR4, Planck Legacy, and KiDS-1000

Creators

  • 1. ROR icon University of Cambridge
  • 2. ROR icon University of Oxford
  • 3. ROR icon Liverpool John Moores University
  • 4. ROR icon University of Edinburgh
  • 5. ROR icon Princeton University
  • 6. ROR icon Stanford University
  • 7. ROR icon Center for Theoretical Physics
  • 8. ROR icon Cardiff University
  • 9. ROR icon Cornell University
  • 10. ROR icon University of Pennsylvania
  • 11. ROR icon Ruhr University Bochum
  • 12. ROR icon University of Bonn
  • 13. ROR icon Lawrence Berkeley National Laboratory
  • 14. ROR icon University of California, Berkeley
  • 15. ROR icon Leiden University
  • 16. ROR icon Stony Brook University
  • 17. ROR icon Columbia University
  • 18. ROR icon University of KwaZulu-Natal
  • 19. ROR icon Rutgers, The State University of New Jersey
  • 20. ROR icon University College London
  • 21. ROR icon University of Waterloo
  • 22. ROR icon Perimeter Institute
  • 23. ROR icon University of Milano-Bicocca
  • 24. ROR icon Haverford College
  • 25. ROR icon California Institute of Technology
  • 26. ROR icon Pontificial Catholic University of Valparaiso
  • 27. ROR icon Arizona State University
  • 28. ROR icon University of Groningen
  • 29. ROR icon Goddard Space Flight Center
  • 30. ROR icon Massachusetts Institute of Technology

Abstract

We measured the cross-correlation between galaxy weak lensing data from the Kilo Degree Survey (KiDS-1000, DR4) and cosmic microwave background (CMB) lensing data from the Atacama Cosmology Telescope (ACT, DR4) and the Planck Legacy survey. We used two samples of source galaxies, selected with photometric redshifts, (0.1 < z_B < 1.2) and (1.2 < z_B < 2), which produce a combined detection significance of the CMB lensing and weak galaxy lensing cross-spectrum of 7.7σ. With the lower redshift galaxy sample, for which the cross-correlation was detected at a significance of 5.3σ, we present joint cosmological constraints on the matter density parameter, Ω_m, and the matter fluctuation amplitude parameter, σ₈, marginalising over three nuisance parameters that model our uncertainty in the redshift and shear calibration as well as the intrinsic alignment of galaxies. We find our measurement to be consistent with the best-fitting flat ΛCDM cosmological models from both Planck and KiDS-1000. We demonstrate the capacity of CMB weak lensing cross-correlations to set constraints on either the redshift or shear calibration by analysing a previously unused high-redshift KiDS galaxy sample (1.2 < z_B < 2), with the cross-correlation detected at a significance of 7σ. This analysis provides an independent assessment for the accuracy of redshift measurements in a regime that is challenging to calibrate directly owing to known incompleteness in spectroscopic surveys.

Additional Information

© ESO 2021. Article published by EDP Sciences. Received 23 November 2020; Accepted 10 March 2021. Published online 31 May 2021. The figures in this work were created with matplotlib (Hunter 2007), making use of the numpy (Oliphant 2006), scipy (Jones et al. 2001), astropy (Astropy Collaboration 2018) and pixell software packages. DA acknowledges support from the Beecroft Trust, and from the Science and Technology Facilities Council through an Ernest Rutherford Fellowship, grant reference ST/P004474. JHD acknowledges support from an STFC Ernest Rutherford Fellowship (project reference ST/S004858/1). HHi acknowledges the European Research Council (ERC) under grant agreement No. 770935 and support from the Deutsche Forschungsgemeinschaft Heisenberg grant Hi 1495/5-1. OD, BDS, FQ and TN acknowledge support from an Isaac Newton Trust Early Career Grant and from the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme (Grant agreement No. 851274). BDS further acknowledges support from an STFC Ernest Rutherford Fellowship. AK, MCF, and HHo acknowledge support from the Netherlands Organisation for Scientific Research Vici grant 639.043.512. CH, TT, MA, JHD and BG acknowledge support from the ERC under grant agreement No. 647112. CH also acknowledges support from the Max Planck Society and the Alexander von Humboldt Foundation in the framework of the Max Planck-Humboldt Research Award endowed by the Federal Ministry of Education and Research and BG from the Royal Society through an Enhancement Award RGF/EA/181006. TT also acknowledges support from the Marie Skłodowska-Curie grant agreement No. 797794. MB acknowledges support from the Polish Ministry of Science and Higher Education through grant DIR/WK/2018/12, and the Polish National Science Center through grants no. 2018/30/E/ST9/00698 and 2018/31/G/ST9/03388. EC acknowledges support from the STFC Ernest Rutherford Fellowship ST/M004856/2 and STFC Consolidated Grant ST/S00033X/1, and from the Horizon 2020 ERC Starting Grant (Grant agreement No 849169). JD is supported by NSF grant number AST-1814971. KK acknowledges support from the Alexander von Humboldt Foundation. SJ is supported by the ERC under grant No. 693024 and the Beecroft Trust. LM is supported by STFC grant ST/N000919/1. KM acknowledges support from the National Research Foundation of South Africa. NS acknowledges support from NSF grant numbers AST-1513618 and AST-1907657. CS acknowledges support from the Agencia Nacional de Investigación y Desarrollo (ANID) through FONDECYT Iniciación grant No. 11191125. ZX is supported by the Gordon and Betty Moore Foundation. The results in this paper are based on observations made with ESO Telescopes at the La Silla Paranal Observatory under programme IDs 177.A-3016, 177.A-3017, 177.A-3018 and 179.A-2004, and on data products produced by the KiDS consortium. The KiDS production team acknowledges support from: Deutsche Forschungsgemeinschaft, ERC, NOVA and NWO-M grants; Target; the University of Padova, and the University Federico II (Naples). Data processing for VIKING has been contributed by the VISTA Data Flow System at CASU, Cambridge and WFAU, Edinburgh. For ACT, the work was supported by the U.S. National Science Foundation through awards AST-1440226, AST0965625 and AST- 0408698 for the ACT project, as well as awards PHY-1214379 and PHY-0855887. 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 (CONICYT). The development of multichroic detectors and lenses was supported by NASA grants NNX13AE56G and NNX14AB58G. Colleagues at AstroNorte and RadioSky provide logistical support and keep operations in Chile running smoothly. We also thank the Mishrahi Fund and the Wilkinson Fund for their generous support of the project. Author contributions: All authors contributed to the development and writing of this paper. The authorship list is given in two groups: the lead authors (NCR & DA & JHD & OD & AK) followed by an alphabetical group of those who made significant contributions to the scientific analysis and/or the ACT or KiDS surveys.

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Submitted - 2011.11613.pdf

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2011.11613.pdf

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Additional details

Identifiers

Eprint ID
109435
Resolver ID
CaltechAUTHORS:20210608-081248841

Related works

Describes
https://arxiv.org/abs/2011.11613 (URL)

Funding

Beecroft Trust
Science and Technology Facilities Council (STFC)
ST/P004474
Science and Technology Facilities Council (STFC)
ST/S004858/1
European Research Council (ERC)
770935
Deutsche Forschungsgemeinschaft (DFG)
Hi 1495/5-1
Isaac Newton Trust
European Research Council (ERC)
851274
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
639.043.512
European Research Council (ERC)
647112
Max Planck Society
Alexander von Humboldt Foundation
Bundesministerium für Bildung und Forschung (BMBF)
Royal Society
RGF/EA/181006
Marie Curie Fellowship
797794
Ministerstwo Nauki i Szkolnictwa Wyższego (MNiSW)
DIR/WK/2018/12
National Science Centre (Poland)
2018/30/E/ST9/00698
National Science Centre (Poland)
2018/31/G/ST9/03388
Science and Technology Facilities Council (STFC)
ST/M004856/2
Science and Technology Facilities Council (STFC)
ST/S00033X/1
European Research Council (ERC)
849169
NSF
AST-1814971
Alexander von Humboldt Foundation
European Research Council (ERC)
693024
Science and Technology Facilities Council (STFC)
ST/N000919/1
National Research Foundation (South Africa)
NSF
AST-1513618
NSF
AST-1907657
Agencia Nacional de Investigación y Desarrollo (ANID)
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)
11191125
Gordon and Betty Moore Foundation
Nederlandse Onderzoekschool Voor Astronomie (NOVA)
University of Padova
University Federico II
NSF
AST-1440226
NSF
AST-0965625
NSF
AST-0408698
NSF
PHY-1214379
NSF
PHY-0855887
Princeton University
University of Pennsylvania
Canada Foundation for Innovation (CFI)
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)
NASA
NNX13AE56G
NASA
NNX14AB58G
Mishrahi Fund
Wilkinson Fund

Dates

Created
2021-06-09
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Updated
2021-06-09
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