Cosmology from weak lensing peaks and minima with Subaru Hyper Suprime-Cam Survey first-year data

Journal Article · Wed Jan 10 00:00:00 EST 2024 · Monthly Notices of the Royal Astronomical Society

DOI:https://doi.org/10.1093/mnras/stae098· OSTI ID:2000976

Marques, Gabriela A. ^[1]; Liu, Jia ^[2]; Shirasaki, Masato ^[3]; Thiele, Leander ^[4]; Grandón, Daniela ^[5]; Huffenberger, Kevin M. ^[6]; Cheng, Sihao ^[7]; Harnois-Déraps, Joachim ^[8]; Osato, Ken ^[9]; Coulton, William R. ^[10]

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1. Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); University of Chicago, IL (United States). Kavli Institute for Cosmological Physics (KICP); Florida State University, Tallahassee, FL (United States)
2. University of Tokyo, Chiba (Japan)
3. National Astronomical Observatory of Japan (NAOJ), National Institutes of Natural Sciences, Tokyo (Japan); The Institute of Statistical Mathematics, Tokyo (Japan)
4. Princeton University, NJ (United States)
5. Leiden University (Netherlands); University of Chile, Santiago (Chile)
6. Florida State University, Tallahassee, FL (United States)
7. Institute for Advanced Study, Princeton, NJ (United States)
8. Newcastle University, Newcastle upon Tyne (United Kingdom)
9. Chiba University (Japan); University of Tokyo (Japan). Kavli Institute for the Physics and Mathematics of the Universe (WPI)
10. Flatiron Institute, New York, NY (United States)

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 S₈ ≡ σ₈$$\sqrt{Ω_m/0.3}$$ = 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.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: Japan Society for the Promotion of Science (JSPS); National Energy Research Scientific Computing Center (NERSC); National Science Foundation (NSF); Science and Technology Facilities Council (STFC); USDOE Office of Science (SC), High Energy Physics (HEP)
• Grant/Contract Number: AC02-05CH11231; AC02-07CH11359
• OSTI ID: 2000976
• Report Number(s): FERMILAB-PUB--23-467-PPD; arXiv:2308.10866; oai:inspirehep.net:2689919
• Journal Information: Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 3 Vol. 528; ISSN 0035-8711
• Publisher: Oxford University Press
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
cosmological parameters
gravitational lensing
large-scale structure of universe
weak