학술논문
Hyper Suprime-Cam Year 3 Results: Cosmology from Galaxy Clustering and Weak Lensing with HSC and SDSS using the Minimal Bias Model
Document Type
Working Paper
Author
Sugiyama, Sunao; Miyatake, Hironao; More, Surhud; Li, Xiangchong; Shirasaki, Masato; Takada, Masahiro; Kobayashi, Yosuke; Takahashi, Ryuichi; Nishimichi, Takahiro; Nishizawa, Atsushi J.; Rau, Markus M.; Zhang, Tianqing; Dalal, Roohi; Mandelbaum, Rachel; Strauss, Michael A.; Hamana, Takashi; Oguri, Masamune; Osato, Ken; Kannawadi, Arun; Armstrong, Robert; Komiyama, Yutaka; Lupton, Robert H.; Lust, Nate B.; Miyazaki, Satoshi; Murayama, Hitoshi; Okura, Yuki; Price, Paul A.; Tait, Philip J.; Tanaka, Masayuki; Wang, Shiang-Yu
Source
Phys. Rev. D 108, 123521 (2023)
Subject
Language
Abstract
We present cosmological parameter constraints from a blind joint analysis of three two-point correlation functions measured from the Year 3 Hyper Suprime-Cam (HSC-Y3) imaging data, covering 416 deg$^2$, and the SDSS DR11 spectroscopic galaxies spanning the redshift range $[0.15, 0.70]$. We subdivide the SDSS galaxies into three volume-limited samples separated in redshift, each of which acts as a large-scale structure tracer characterized by the measurement of the projected correlation function, $w_{\rm p}(R)$. We also use the measurements of the galaxy-galaxy weak lensing signal $\Delta \Sigma(R)$ for each of these SDSS samples which act as lenses for a secure sample of source galaxies selected from the HSC-Y3 shape catalog based on their photometric redshifts. We combine these measurements with the cosmic shear correlation functions, $\xi_{\pm}(\vartheta)$, measured for our HSC source sample. We model these observables with the minimal bias model of the galaxy clustering observables in the context of a flat $\Lambda$CDM cosmology. We use conservative scale cuts, $R>12$ and $8~h^{-1}$Mpc, for $\Delta\Sigma$ and $w_{\rm p}$, respectively, where the minimal bias model is valid, in addition to conservative prior on the residual bias in the mean redshift of the HSC photometric source galaxies. Our baseline analysis yields $S_8=0.775^{+0.043}_{-0.038}$ (68% C.I.) for the $\Lambda$CDM model, after marginalizing over uncertainties in other parameters. Our value of $S_8$ is consistent with that from the Planck 2018 data, but the credible interval of our result is still relatively large. Our results are statistically consistent with those of a companion paper, which extends this analysis to smaller scales with an emulator-based halo model.
Comment: 29 pages, 17 figures, 4 tables, version accepted for publication in PRD together with other HSC Y3 weak lensing cosmology papers - see https://hsc-release.mtk.nao.ac.jp/doc/index.php/wly3/
Comment: 29 pages, 17 figures, 4 tables, version accepted for publication in PRD together with other HSC Y3 weak lensing cosmology papers - see https://hsc-release.mtk.nao.ac.jp/doc/index.php/wly3/