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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…
Nonlinear redshift space distortion in halo ellipticity correlations: Analytical model and N-body simulations
Teppei Okumura, Atsushi Taruya, Toshiki Kurita +1
We present an analytic model of nonlinear correlators of galaxy/halo ellipticities in redshift space. The three-dimensional ellipticity field is not affected by the redshift-space…
Multi-stream radial structure of cold dark matter haloes from particle trajectories: deep inside splashback radius
Yohsuke Enomoto, Takahiro Nishimichi, Atsushi Taruya
By tracking trajectories of dark matter (DM) particles accreting onto haloes in cosmological -body simulations, we investigate the radial phase-space distribution of cold dark m…
Mock Observatory: two thousand lightcone mock catalogues of luminous red galaxies from the Hyper Suprime-Cam Survey for the cosmological large-scale analysis
Shogo Ishikawa, Teppei Okumura, Takahiro Nishimichi
Estimating a reliable covariance matrix for correlation functions of galaxies is a crucial task to obtain accurate cosmological constraints from galaxy surveys. We generate 2,000 i…
Robustness of Baryon Acoustic Oscillations Measurements with Photometric Redshift Uncertainties
Keitaro Ishikawa, Tomomi Sunayama, Atsushi J. Nishizawa +2
We investigate the robustness of baryon acoustic oscillations (BAO) measurements with a photometric galaxy sample using mock galaxy catalogues with various sizes of photometric red…
The Intrinsic Alignment of Galaxy Clusters and Impact of Projection Effects
Jingjing Shi, Tomomi Sunayama, Toshiki Kurita +7
Galaxy clusters, being the most massive objects in the Universe, exhibit the strongest alignment with the large-scale structure. However, mis-identification of members due to proje…