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; Zhilei Xu

doi:10.1051/0004-6361/202039975

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 HildebrandtJ. 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, Zhilei Xu

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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 < zB < 1.2) and (1.2 < zB < 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, ωm, 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 < zB < 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.

Original language	English (US)
Article number	A146
Journal	Astronomy and Astrophysics
Volume	649
DOIs	https://doi.org/10.1051/0004-6361/202039975
State	Published - May 1 2021

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Cosmology: observations
Gravitational lensing: weak
Large-scale structure of Universe

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10.1051/0004-6361/202039975

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Robertson, N. C., Alonso, D., Harnois-Déraps, J., Darwish, O., Kannawadi, A., Amon, A., Asgari, M., Bilicki, M., Calabrese, E., Choi, S. K., Devlin, M. J., Dunkley, J., Dvornik, A., Erben, T., Ferraro, S., Fortuna, M. C., Giblin, B., Han, D., Heymans, C., ... Xu, Z. (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, Article A146. https://doi.org/10.1051/0004-6361/202039975

@article{e95d0d7a777c443bbe4c8f7111c95b71,

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

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 < zB < 1.2) and (1.2 < zB < 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, ωm, 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 < zB < 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.",

keywords = "Cosmology: observations, Gravitational lensing: weak, Large-scale structure of Universe",

author = "Robertson, {Naomi Clare} and David Alonso and Joachim Harnois-D{\'e}raps and Omar Darwish and Arun Kannawadi and Alexandra Amon and Marika Asgari and MacIej Bilicki and Erminia Calabrese and Choi, {Steve K.} and Devlin, {Mark J.} and Jo Dunkley and Andrej Dvornik and Thomas Erben and Simone Ferraro and Fortuna, {Maria Cristina} and Benjamin Giblin and Dongwon Han and Catherine Heymans and Hendrik Hildebrandt and Hill, {J. Colin} and Matt Hilton and Ho, {Shuay Pwu P.} and Henk Hoekstra and Johannes Hubmayr and Hughes, {John P.} and Benjamin Joachimi and Shahab Joudaki and Kenda Knowles and Konrad Kuijken and Madhavacheril, {Mathew S.} and Kavilan Moodley and Lance Miller and Toshiya Namikawa and Federico Nati and Niemack, {Michael D.} and Page, {Lyman A.} and Bruce Partridge and Emmanuel Schaan and Alessandro Schillaci and Peter Schneider and Neelima Sehgal and Sherwin, {Blake D.} and Crist{\'o}bal Sif{\'o}n and Staggs, {Suzanne T.} and Tilman Tr{\"o}ster and {Van Engelen}, Alexander and Edwin Valentijn and Wollack, {Edward J.} and Wright, {Angus H.} and Zhilei Xu",

note = "Publisher Copyright: {\textcopyright} ESO 2021.",

year = "2021",

month = may,

day = "1",

doi = "10.1051/0004-6361/202039975",

language = "English (US)",

volume = "649",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Robertson, NC, Alonso, D, Harnois-Déraps, J, Darwish, O, Kannawadi, A, Amon, A, Asgari, M, Bilicki, M, Calabrese, E, Choi, SK, Devlin, MJ, Dunkley, J, Dvornik, A, Erben, T, Ferraro, S, Fortuna, MC, Giblin, B, Han, D, Heymans, C, Hildebrandt, H, Hill, JC, Hilton, M, Ho, SPP, Hoekstra, H, Hubmayr, J, Hughes, JP, Joachimi, B, Joudaki, S, Knowles, K, Kuijken, K, Madhavacheril, MS, Moodley, K, Miller, L, Namikawa, T, Nati, F, Niemack, MD, Page, LA, Partridge, B, Schaan, E, Schillaci, A, Schneider, P, Sehgal, N, Sherwin, BD, Sifón, C, Staggs, ST, Tröster, T, Van Engelen, A, Valentijn, E, Wollack, EJ, Wright, AH & Xu, Z 2021, 'Strong detection of the CMB lensing and galaxy weak lensing cross-correlation from ACT-DR4, Planck Legacy, and KiDS-1000', Astronomy and Astrophysics, vol. 649, A146. https://doi.org/10.1051/0004-6361/202039975

TY - JOUR

T1 - Strong detection of the CMB lensing and galaxy weak lensing cross-correlation from ACT-DR4, Planck Legacy, and KiDS-1000

AU - Robertson, Naomi Clare

AU - Alonso, David

AU - Harnois-Déraps, Joachim

AU - Darwish, Omar

AU - Kannawadi, Arun

AU - Amon, Alexandra

AU - Asgari, Marika

AU - Bilicki, MacIej

AU - Calabrese, Erminia

AU - Choi, Steve K.

AU - Devlin, Mark J.

AU - Dunkley, Jo

AU - Dvornik, Andrej

AU - Erben, Thomas

AU - Ferraro, Simone

AU - Fortuna, Maria Cristina

AU - Giblin, Benjamin

AU - Han, Dongwon

AU - Heymans, Catherine

AU - Hildebrandt, Hendrik

AU - Hill, J. Colin

AU - Hilton, Matt

AU - Ho, Shuay Pwu P.

AU - Hoekstra, Henk

AU - Hubmayr, Johannes

AU - Hughes, John P.

AU - Joachimi, Benjamin

AU - Joudaki, Shahab

AU - Knowles, Kenda

AU - Kuijken, Konrad

AU - Madhavacheril, Mathew S.

AU - Moodley, Kavilan

AU - Miller, Lance

AU - Namikawa, Toshiya

AU - Nati, Federico

AU - Niemack, Michael D.

AU - Page, Lyman A.

AU - Partridge, Bruce

AU - Schaan, Emmanuel

AU - Schillaci, Alessandro

AU - Schneider, Peter

AU - Sehgal, Neelima

AU - Sherwin, Blake D.

AU - Sifón, Cristóbal

AU - Staggs, Suzanne T.

AU - Tröster, Tilman

AU - Van Engelen, Alexander

AU - Valentijn, Edwin

AU - Wollack, Edward J.

AU - Wright, Angus H.

AU - Xu, Zhilei

PY - 2021/5/1

Y1 - 2021/5/1

N2 - 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 < zB < 1.2) and (1.2 < zB < 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, ωm, 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 < zB < 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.

AB - 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 < zB < 1.2) and (1.2 < zB < 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, ωm, 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 < zB < 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.

KW - Cosmology: observations

KW - Gravitational lensing: weak

KW - Large-scale structure of Universe

UR - http://www.scopus.com/inward/record.url?scp=85107263813&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85107263813&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/202039975

DO - 10.1051/0004-6361/202039975

M3 - Article

AN - SCOPUS:85107263813

SN - 0004-6361

VL - 649

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A146

ER -

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

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All Science Journal Classification (ASJC) codes

Keywords

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