Cosmology from weak lensing peaks and minima with Subaru Hyper Suprime-Cam Survey first-year data
ABSTRACT We present cosmological constraints derived from peak counts, minimum counts, and the angular power spectrum of the Subaru Hyper Suprime-Cam first-year (HSC Y1) weak lensing shear catalogue. Weak lensing peak and minimum counts contain non-Gaussian information and hence are complementary to...
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Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2024-03, Vol.528 (3), p.4513-4527 |
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creator | Marques, Gabriela A Liu, Jia Shirasaki, Masato Thiele, Leander Grandón, Daniela Huffenberger, Kevin M Cheng, Sihao Harnois-Déraps, Joachim Osato, Ken Coulton, William R |
description | ABSTRACT
We present cosmological constraints derived from peak counts, minimum counts, and the angular power spectrum of the Subaru Hyper Suprime-Cam first-year (HSC Y1) weak lensing shear catalogue. Weak lensing peak and minimum counts contain non-Gaussian information and hence are complementary to the conventional two-point statistics in constraining cosmology. In this work, we forward-model the three summary statistics and their dependence on cosmology, using a suite of N-body simulations tailored to the HSC Y1 data. We investigate systematic and astrophysical effects including intrinsic alignments, baryon feedback, multiplicative bias, and photometric redshift uncertainties. We mitigate the impact of these systematics by applying cuts on angular scales, smoothing scales, signal-to-noise ratio bins, and tomographic redshift bins. By combining peaks, minima, and the power spectrum, assuming a flat-ΛCDM model, we obtain $S_{8} \equiv \sigma _8\sqrt{\Omega _m/0.3}= 0.810^{+0.022}_{-0.026}$, a 35 per cent tighter constraint than that obtained from the angular power spectrum alone. Our results are in agreement with other studies using HSC weak lensing shear data, as well as with Planck 2018 cosmology and recent CMB lensing constraints from the Atacama Cosmology Telescope and the South Pole Telescope. |
doi_str_mv | 10.1093/mnras/stae098 |
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We present cosmological constraints derived from peak counts, minimum counts, and the angular power spectrum of the Subaru Hyper Suprime-Cam first-year (HSC Y1) weak lensing shear catalogue. Weak lensing peak and minimum counts contain non-Gaussian information and hence are complementary to the conventional two-point statistics in constraining cosmology. In this work, we forward-model the three summary statistics and their dependence on cosmology, using a suite of N-body simulations tailored to the HSC Y1 data. We investigate systematic and astrophysical effects including intrinsic alignments, baryon feedback, multiplicative bias, and photometric redshift uncertainties. We mitigate the impact of these systematics by applying cuts on angular scales, smoothing scales, signal-to-noise ratio bins, and tomographic redshift bins. By combining peaks, minima, and the power spectrum, assuming a flat-ΛCDM model, we obtain $S_{8} \equiv \sigma _8\sqrt{\Omega _m/0.3}= 0.810^{+0.022}_{-0.026}$, a 35 per cent tighter constraint than that obtained from the angular power spectrum alone. Our results are in agreement with other studies using HSC weak lensing shear data, as well as with Planck 2018 cosmology and recent CMB lensing constraints from the Atacama Cosmology Telescope and the South Pole Telescope.</description><identifier>ISSN: 0035-8711</identifier><identifier>EISSN: 1365-2966</identifier><identifier>DOI: 10.1093/mnras/stae098</identifier><language>eng</language><publisher>London: Oxford University Press</publisher><subject>ASTRONOMY AND ASTROPHYSICS ; Bins ; Constraints ; cosmological parameters ; Cosmology ; gravitational lensing ; large-scale structure of universe ; Red shift ; Signal to noise ratio ; South Pole ; weak</subject><ispartof>Monthly notices of the Royal Astronomical Society, 2024-03, Vol.528 (3), p.4513-4527</ispartof><rights>The Author(s) 2024. Published by Oxford University Press on behalf of Royal Astronomical Society. 2024</rights><rights>The Author(s) 2024. Published by Oxford University Press on behalf of Royal Astronomical Society.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c364t-63813a56f8245ad5d1cdd235ad4343e9fbefef49557af3880da52123299b7e803</citedby><cites>FETCH-LOGICAL-c364t-63813a56f8245ad5d1cdd235ad4343e9fbefef49557af3880da52123299b7e803</cites><orcidid>0000-0002-1297-3673 ; 0000-0002-9156-7461 ; 0000-0001-7109-0099 ; 0000-0002-7934-2569 ; 0000-0003-2911-9163 ; 0000000279342569 ; 0000000291567461 ; 0000000212973673 ; 0000000329119163 ; 0000000171090099</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,860,881,1598,27903,27904</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/2000976$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Marques, Gabriela A</creatorcontrib><creatorcontrib>Liu, Jia</creatorcontrib><creatorcontrib>Shirasaki, Masato</creatorcontrib><creatorcontrib>Thiele, Leander</creatorcontrib><creatorcontrib>Grandón, Daniela</creatorcontrib><creatorcontrib>Huffenberger, Kevin M</creatorcontrib><creatorcontrib>Cheng, Sihao</creatorcontrib><creatorcontrib>Harnois-Déraps, Joachim</creatorcontrib><creatorcontrib>Osato, Ken</creatorcontrib><creatorcontrib>Coulton, William R</creatorcontrib><creatorcontrib>Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)</creatorcontrib><title>Cosmology from weak lensing peaks and minima with Subaru Hyper Suprime-Cam Survey first-year data</title><title>Monthly notices of the Royal Astronomical Society</title><description>ABSTRACT
We present cosmological constraints derived from peak counts, minimum counts, and the angular power spectrum of the Subaru Hyper Suprime-Cam first-year (HSC Y1) weak lensing shear catalogue. Weak lensing peak and minimum counts contain non-Gaussian information and hence are complementary to the conventional two-point statistics in constraining cosmology. In this work, we forward-model the three summary statistics and their dependence on cosmology, using a suite of N-body simulations tailored to the HSC Y1 data. We investigate systematic and astrophysical effects including intrinsic alignments, baryon feedback, multiplicative bias, and photometric redshift uncertainties. We mitigate the impact of these systematics by applying cuts on angular scales, smoothing scales, signal-to-noise ratio bins, and tomographic redshift bins. By combining peaks, minima, and the power spectrum, assuming a flat-ΛCDM model, we obtain $S_{8} \equiv \sigma _8\sqrt{\Omega _m/0.3}= 0.810^{+0.022}_{-0.026}$, a 35 per cent tighter constraint than that obtained from the angular power spectrum alone. 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We present cosmological constraints derived from peak counts, minimum counts, and the angular power spectrum of the Subaru Hyper Suprime-Cam first-year (HSC Y1) weak lensing shear catalogue. Weak lensing peak and minimum counts contain non-Gaussian information and hence are complementary to the conventional two-point statistics in constraining cosmology. In this work, we forward-model the three summary statistics and their dependence on cosmology, using a suite of N-body simulations tailored to the HSC Y1 data. We investigate systematic and astrophysical effects including intrinsic alignments, baryon feedback, multiplicative bias, and photometric redshift uncertainties. We mitigate the impact of these systematics by applying cuts on angular scales, smoothing scales, signal-to-noise ratio bins, and tomographic redshift bins. By combining peaks, minima, and the power spectrum, assuming a flat-ΛCDM model, we obtain $S_{8} \equiv \sigma _8\sqrt{\Omega _m/0.3}= 0.810^{+0.022}_{-0.026}$, a 35 per cent tighter constraint than that obtained from the angular power spectrum alone. Our results are in agreement with other studies using HSC weak lensing shear data, as well as with Planck 2018 cosmology and recent CMB lensing constraints from the Atacama Cosmology Telescope and the South Pole Telescope.</abstract><cop>London</cop><pub>Oxford University Press</pub><doi>10.1093/mnras/stae098</doi><tpages>15</tpages><orcidid>https://orcid.org/0000-0002-1297-3673</orcidid><orcidid>https://orcid.org/0000-0002-9156-7461</orcidid><orcidid>https://orcid.org/0000-0001-7109-0099</orcidid><orcidid>https://orcid.org/0000-0002-7934-2569</orcidid><orcidid>https://orcid.org/0000-0003-2911-9163</orcidid><orcidid>https://orcid.org/0000000279342569</orcidid><orcidid>https://orcid.org/0000000291567461</orcidid><orcidid>https://orcid.org/0000000212973673</orcidid><orcidid>https://orcid.org/0000000329119163</orcidid><orcidid>https://orcid.org/0000000171090099</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | ASTRONOMY AND ASTROPHYSICS Bins Constraints cosmological parameters Cosmology gravitational lensing large-scale structure of universe Red shift Signal to noise ratio South Pole weak |
title | Cosmology from weak lensing peaks and minima with Subaru Hyper Suprime-Cam Survey first-year data |
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