activity
20152026
most citedThe Hyper Suprime-Cam SSP Survey: Overview and Survey Design

1.1k citations · 3.8k across the 63 of their papers we have counts for

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53 papers · 1 filter

astro-ph.CO2026

Weak-lensing Shear-Selected Galaxy Clusters from the Hyper Suprime-Cam Subaru Strategic Program: III. A precision cosmological sample enabled by optical confirmation

I-Non Chiu, Kai-Feng Chen, Masamune Oguri +9

We develop fCAMIRA (forced-mode CAMIRA), a tool for optical cluster confirmation, and apply it to a sample of 129 weak-lensing (WL) shear-selected galaxy clusters identified in ape…

astro-ph.CO2026

Clustering of emission line galaxies with IllustrisTNG -- II. cosmology challenge with anisotropic correlation functions and ELG-halo connections

Ken Osato, Teppei Okumura

Emission line galaxies (ELGs) are the primary tracers of the large-scale structures of the Universe in ongoing Stage-IV cosmological spectroscopic surveys, which aim to measure the…

astro-ph.CO2026

Cross-correlating galaxies and cosmic dispersion measures: Constraints on the gas-to-halo mass relation from 2MASS galaxies and 133 localized fast radio bursts

Masato Shirasaki, Ryuichi Takahashi, Ken Osato +1

We conduct a cross-correlation analysis between large-scale structures traced by the Two Micron All Sky Survey (2MASS) galaxy catalog and the cosmic dispersion measures of 133 loca…

astro-ph.CO2025

Denoising weak lensing mass maps with diffusion model and generative adversarial network

Shohei D. Aoyama, Ken Osato, Masato Shirasaki

The matter distribution of the Universe can be mapped through the weak gravitational lensing (WL) effect: small distortions of the shapes of distant galaxies, which reflects the in…

astro-ph.CO2025

Measurement of angular cross-correlation between the cosmological dispersion measure and the thermal Sunyaev--Zeldovich effect

Ryuichi Takahashi, Kunihito Ioka, Masato Shirasaki +1

The dispersion measures () from fast radio bursts (FRBs) and the thermal Sunyaev--Zeldovich (tSZ) effect probe the free-electron density and thermal pressure, respective…

astro-ph.CO2025

Cosmology and Source Redshift Constraints from Galaxy Clustering and Tomographic Weak Lensing with HSC Y3 and SDSS using the Point-Mass Correction Model

Tianqing Zhang, Xiangchong Li, Sunao Sugiyama +13

The combination of galaxy clustering and weak lensing is a powerful probe of the cosmology model. We present a joint analysis of galaxy clustering and weak lensing cosmology using…

astro-ph.CO2025

Modelling Galaxy Clustering and Tomographic Galaxy-Galaxy Lensing with HSC Y3 and SDSS using the Point-Mass Correction Model and Redshift Self-Calibration

Tianqing Zhang, Sunao Sugiyama, Surhud More +13

The combination of galaxy-galaxy weak lensing and galaxy clustering is a powerful probe of the cosmological model, and exploration of how to best model and extract this information…

astro-ph.CO2025★ 1 cited

CosmoGLINT: Cosmological Generative Model for Line Intensity Mapping with Transformer

Kana Moriwaki, Rui Lan Jun, Ken Osato +1

Modelling star-forming galaxies is crucial for upcoming observations of large-scale matter and galaxy distributions with galaxy redshift surveys and line intensity mapping (LIM). W…

astro-ph.CO2025★ 1 cited

Denoising weak lensing mass maps with diffusion model: systematic comparison with generative adversarial network

Shohei D. Aoyama, Ken Osato, Masato Shirasaki

Removing the shape noise from the observed weak lensing field, i.e., denoising, enhances the potential of WL by accessing information at small scales where the shape noise dominate…

astro-ph.CO2024★ 5 cited

Baryon Pasting the Uchuu Lightcone Simulation

Erwin T. Lau, Daisuke Nagai, Arya Farahi +4

We present the Baryon Pasted (BP) X-ray and thermal Sunyaev-Zel'dovich (tSZ) maps derived from the half-sky Uchuu Lightcone simulation. These BP-Uchuu maps are constructed using mo…

astro-ph.CO2024

Cosmology from HSC Y1 Weak Lensing with Combined Higher-Order Statistics and Simulation-based Inference

Camila P. Novaes, Leander Thiele, Joaquin Armijo +7

We present cosmological constraints from weak lensing with the Subaru Hyper Suprime-Cam (HSC) first-year (Y1) data, using a simulation-based inference (SBI) method. % We explore th…

astro-ph.CO2024★ 1 cited

Perturbation Theory Remixed II: Improved Modeling of Nonlinear Bispectrum

Zhenyuan Wang, Donghui Jeong, Atsushi Taruya +2

We present the application of the -th order Eulerian Perturbation Theory (EPT) for modeling the matter bispectrum in real space as an advancement over the Standard Perturbati…

astro-ph.CO2023★ 32 cited

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

Gabriela A. Marques, Jia Liu, Masato Shirasaki +7

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…

astro-ph.CO2023★ 1 cited

Line-of-sight structure of troughs identified in Subaru Hyper Suprime-Cam Year 3 weak lensing mass maps

Takumi Shimasue, Ken Osato, Masamune Oguri +2

We perform the weak lensing mass mapping analysis to identify troughs, which are defined as local minima in the mass map. Since weak lensing probes projected matter along the line-…

astro-ph.CO2023★ 2 cited

Perturbation theory challenge for cosmological parameters estimation II.: Matter power spectrum in redshift space

Ken Osato, Takahiro Nishimichi, Atsushi Taruya +1

Constraining cosmological parameters from large-scale structure observations requires precise and accurate tools to compute its properties. While perturbation theory (PT) approache…

astro-ph.CO2023★ 8 cited

Hyper Suprime-Cam Year 3 Results: Cosmology from Galaxy Clustering and Weak Lensing with HSC and SDSS using the Emulator Based Halo Model

Hironao Miyatake, Sunao Sugiyama, Masahiro Takada +31

We present cosmology results from a blinded joint analysis of cosmic shear, , galaxy-galaxy weak lensing, , and projected galaxy clustering, $w_{\rm p}…

astro-ph.CO2023★ 213 cited

Hyper Suprime-Cam Year 3 Results: Cosmology from Cosmic Shear Power Spectra

Roohi Dalal, Xiangchong Li, Andrina Nicola +35

We measure weak lensing cosmic shear power spectra from the three-year galaxy shear catalog of the Hyper Suprime-Cam (HSC) Subaru Strategic Program imaging survey. The shear catalo…

astro-ph.CO2023★ 85 cited

Hyper Suprime-Cam Year 3 Results: Cosmology from Galaxy Clustering and Weak Lensing with HSC and SDSS using the Minimal Bias Model

Sunao Sugiyama, Hironao Miyatake, Surhud More +27

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,…

astro-ph.CO2023★ 4 cited

Hyper Suprime-Cam Year 3 Results: Measurements of Clustering of SDSS-BOSS Galaxies, Galaxy-Galaxy Lensing and Cosmic Shear

Surhud More, Sunao Sugiyama, Hironao Miyatake +31

We use the Sloan Digital Sky Survey (SDSS) BOSS galaxies and their overlap with approximately 416 sq. degree of deep -band imaging from the Subaru Hyper Suprime-Cam Survey (…

astro-ph.CO2023★ 23 cited

Hyper Suprime-Cam Year 3 Results: Cosmology from Cosmic Shear Two-point Correlation Functions

Xiangchong Li, Tianqing Zhang, Sunao Sugiyama +32

We perform a blinded cosmology analysis with cosmic shear two-point correlation functions (2PCFs) measured from more than 25 million galaxies in the Hyper Suprime-Cam three-year sh…

astro-ph.CO2022★ 7 cited

Perturbation Theory Remixed: Improved Nonlinearity Modeling beyond Standard Perturbation Theory

Zhenyuan Wang, Donghui Jeong, Atsushi Taruya +2

We present a novel EPT (th-order Eulerian Perturbation Theory) scheme to model the nonlinear density field by the summation up to th-order density fields in perturbation t…

astro-ph.CO2022★ 14 cited

Comparing weak lensing peak counts in baryonic correction models to hydrodynamical simulations

Max E. Lee, Tianhuan Lu, Zoltán Haiman +2

Next-generation weak lensing (WL) surveys, such as by the Vera Rubin Observatory's LSST, the Space Telescope, and the space mission, will supply…

astro-ph.CO2022★ 38 cited

Probabilistic Mass Mapping with Neural Score Estimation

Benjamin Remy, Francois Lanusse, Niall Jeffrey +4

Weak lensing mass-mapping is a useful tool to access the full distribution of dark matter on the sky, but because of intrinsic galaxy ellipticies and finite fields/missing data, th…

astro-ph.CO2022★ 25 cited

Baryon Pasting Algorithm: Halo-based and Particle-based Pasting Methods

Ken Osato, Daisuke Nagai

We present a fast methodology to produce mock observations of the thermal and kinetic Sunyaev-Zel'dovich (SZ) effects based on the dark matter only -body simulations coupled wit…