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

Robertson, Naomi Clare and Alonso, David and Harnois-Déraps, Joachim and Darwish, Omar and Kannawadi, Arun and Amon, Alexandra and Asgari, Marika and Bilicki, Maciej and Calabrese, Erminia and Choi, Steve K. and Devlin, Mark J. and Dunkley, Jo and Dvornik, Andrej and Erben, Thomas and Ferraro, Simone and Fortuna, Maria Cristina and Giblin, Benjamin and Han, Dongwon and Heymans, Catherine and Hildebrandt, Hendrik and Hill, J. Colin and Hilton, Matt and Ho, Shuay-Pwu P. and Hoekstra, Henk and Hubmayr, Johannes and Hughes, John P. and Joachimi, Benjamin and Joudaki, Shahab and Knowles, Kenda and Kuijken, Konrad and Madhavacheril, Mathew S. and Moodley, Kavilan and Miller, Lance and Namikawa, Toshiya and Nati, Federico and Niemack, Michael D. and Page, Lyman A. and Partridge, Bruce and Schaan, Emmanuel and Schillaci, Alessandro and Schneider, Peter and Sehgal, Neelima and Sherwin, Blake D. and Sifón, Cristóbal and Staggs, Suzanne T. and Tröster, Tilman and van Engelen, Alexander and Valentijn, Edwin and Wollack, Edward J. and Wright, Angus H. and Xu, Zhilei (2021) Strong detection of the CMB lensing and galaxy weak lensing cross-correlation from ACT-DR4, Planck Legacy, and KiDS-1000. Astronomy and Astrophysics, 649 . Art. No. A146. ISSN 0004-6361. doi:10.1051/0004-6361/202039975.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Darwish, Omar0000-0003-2946-1866
Choi, Steve K.0000-0002-9113-7058
Devlin, Mark J.0000-0002-3169-9761
Ferraro, Simone0000-0003-4992-7854
Hill, J. Colin0000-0002-9539-0835
Hilton, Matt0000-0002-8490-8117
Hubmayr, Johannes0000-0002-2781-9302
Hughes, John P.0000-0002-8816-6800
Madhavacheril, Mathew S.0000-0001-6740-5350
Moodley, Kavilan0000-0001-6606-7142
Namikawa, Toshiya0000-0003-3070-9240
Nati, Federico0000-0002-8307-5088
Niemack, Michael D.0000-0001-7125-3580
Page, Lyman A.0000-0002-9828-3525
Partridge, Bruce0000-0001-6541-9265
Schaan, Emmanuel0000-0002-4619-8927
Schillaci, Alessandro0000-0002-0512-1042
Sehgal, Neelima0000-0002-9674-4527
Sifón, Cristóbal0000-0002-8149-1352
Staggs, Suzanne T.0000-0002-7020-7301
Wollack, Edward J.0000-0002-7567-4451
Xu, Zhilei0000-0001-5112-2567
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.
Funding AgencyGrant Number
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 TrustUNSPECIFIED
European Research Council (ERC)851274
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)639.043.512
European Research Council (ERC)647112
Max Planck SocietyUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)UNSPECIFIED
Royal SocietyRGF/EA/181006
Marie Curie Fellowship797794
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
Alexander von Humboldt FoundationUNSPECIFIED
European Research Council (ERC)693024
Science and Technology Facilities Council (STFC)ST/N000919/1
National Research Foundation (South Africa)UNSPECIFIED
Agencia Nacional de Investigación y Desarrollo (ANID)UNSPECIFIED
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)11191125
Gordon and Betty Moore FoundationUNSPECIFIED
Nederlandse Onderzoekschool Voor Astronomie (NOVA)UNSPECIFIED
University of PadovaUNSPECIFIED
University Federico IIUNSPECIFIED
Princeton UniversityUNSPECIFIED
University of PennsylvaniaUNSPECIFIED
Canada Foundation for Innovation (CFI)UNSPECIFIED
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)UNSPECIFIED
Subject Keywords:gravitational lensing: weak – large-scale structure of Universe – cosmology: observations
Record Number:CaltechAUTHORS:20210608-081248841
Persistent URL:
Official Citation:Strong detection of the CMB lensing and galaxy weak lensing cross-correlation from ACT-DR4, Planck Legacy, and KiDS-1000. Naomi Clare Robertson, David Alonso, Joachim Harnois-Déraps, Omar Darwish, Arun Kannawadi, Alexandra Amon, Marika Asgari, Maciej Bilicki, Erminia Calabrese, Steve K. Choi, Mark J. Devlin, Jo Dunkley, Andrej Dvornik, Thomas Erben, Simone Ferraro, Maria Cristina Fortuna, Benjamin Giblin, Dongwon Han, Catherine Heymans, Hendrik Hildebrandt, J. Colin Hill, Matt Hilton, Shuay-Pwu P. Ho, Henk Hoekstra, Johannes Hubmayr, John P. Hughes, Benjamin Joachimi, Shahab Joudaki, Kenda Knowles, Konrad Kuijken, Mathew S. Madhavacheril, Kavilan Moodley, Lance Miller, Toshiya Namikawa, Federico Nati, Michael D. Niemack, Lyman A. Page, Bruce Partridge, Emmanuel Schaan, Alessandro Schillaci, Peter Schneider, Neelima Sehgal, Blake D. Sherwin, Cristóbal Sifón, Suzanne T. Staggs, Tilman Tröster, Alexander van Engelen, Edwin Valentijn, Edward J. Wollack, Angus H. Wright and Zhilei Xu. A&A, 649 (2021) A146; DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:109435
Deposited By: Tony Diaz
Deposited On:09 Jun 2021 19:20
Last Modified:09 Jun 2021 19:20

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