23 citations · 43 across the 13 of their papers we have counts for
13 papers
Modeling survey-window and integral-constraint effects on PNG in the galaxy power spectrum with light-cone mocks
Shintaro Nakano, Masahiro Takada, Toshiki Kurita +1
We develop an analysis framework based on {\em light-cone} galaxy mock catalogs constructed from linear theory simulations in order to accurately model the impact of primordial non…
Analytical method for computing the covariance matrix of cosmic shear two-point correlation function
Kosuke Nagura, Ryo Terasawa, Taisei Terawaki +1
Accurate estimation of the covariance matrix of cosmic shear statistics is essential for cosmological analyses using current and upcoming wide-area weak lensing surveys. In this wo…
The contribution from small scales on two-point shear analysis: comparison between power spectrum and correlation function
João Ferri, Elisa G. M. Ferreira, Ryo Terasawa
A known problem in cosmic shear two-point statistics is the apparent inconsistency between analyses performed in harmonic space (power spectrum) and real space (angular correlation…
Impact of Simulation Box Size for Weak Lensing: Replication and Super-Sample Effects
Akira Tokiwa, Adrian E. Bayer, Joaquin Armijo +6
We quantify the bias caused by small simulation box size on weak lensing observables and covariances, considering both replication and super-sample effects for a range of higher-or…
Late-time suppression of structure growth as a solution for the tension
Ryo Terasawa, Masahiro Takada, Toshiki Kurita +1
The value inferred from the Subaru Hyper Suprime-Cam (HSC) Year 3 cosmic shear data, under the assumption of the flat CDM model, is 2-3 lower than that inferred from ob…
Testing small-scale modifications in the primordial power spectrum with Subaru HSC cosmic shear, primary CMB and CMB lensing
Ryo Terasawa, Masahiro Takada, Sunao Sugiyama +1
Different cosmological probes, such as primary cosmic microwave background (CMB) anisotropies, CMB lensing, and cosmic shear, are sensitive to the primordial power spectrum (PPS) o…
On the equivalence between galaxy angular correlation function and power spectrum in constraining primordial non-Gaussianity
Ryo Terasawa, Yue Nan, Masahiro Takada
We investigate the angular power spectrum ( and angular correlation function () of galaxy number density field in the presence of the local-type primordial non-Gauss…
The impact of the redshift-dependent selection effect of halos on the redshift-space power spectrum
Kanmi Nose, Masahiro Takada, Ryo Terasawa
In a wide-area spectroscopic survey of galaxies, it is nearly impossible to obtain a homogeneous sample of galaxies with respect to galaxy properties such as stellar mass and host…
Exploring the baryonic effect signature in the Hyper Suprime-Cam Year 3 cosmic shear two-point correlations on small scales: the tension remains present
Ryo Terasawa, Xiangchong Li, Masahiro Takada +10
The baryonic feedback effect is considered as a possible solution to the so-called tension indicated in cosmic shear cosmology. The baryonic effect is more significant on sma…
Flat to nonflat: Calculating nonlinear power spectra of biased tracers for nonflat CDM model
Ryo Terasawa, Ryuichi Takahashi, Takahiro Nishimichi +1
The growth of large-scale structure, together with the geometrical information of cosmic expansion history and cosmological distances, can be used to obtain constraints on the spat…
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…
Super-sample covariance of the power spectrum, bispectrum, halos, voids, and their cross covariances
Adrian E. Bayer, Jia Liu, Ryo Terasawa +3
We study the effect of super-sample covariance (SSC) on the power spectrum and higher-order statistics: bispectrum, halo mass function, and void size function. We also investigate…
Separate universe approach to evaluate nonlinear matter power spectrum for non-flat CDM model
Ryo Terasawa, Ryuichi Takahashi, Takahiro Nishimichi +1
The spatial curvature () of the Universe is one of the most fundamental quantities that could give a link to the early universe physics. In this paper we develop an approximat…