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Projected Axis Ratios of Galaxy Clusters in the Horizon-AGN Simulation: Impact of Baryon Physics and Comparison with Observations
Daichi Suto, Sebastien Peirani, Yohan Dubois +4
We characterize the non-sphericity of galaxy clusters by the projected axis ratio of spatial distribution of star, dark matter, and X-ray surface brightness (XSB). We select 40 sim…
The imprint of gravity on weak gravitational lensing II : Information content in cosmic shear statistics
Masato Shirasaki, Takahiro Nishimichi, Baojiu Li +1
We investigate the information content of various cosmic shear statistics on the theory of gravity. Focusing on the Hu-Sawicki-type model, we perform a set of ray-tracing si…
Consistency relations for large scale structures with primordial non-Gaussianities
Patrick Valageas, Atsushi Taruya, Takahiro Nishimichi
We investigate how the consistency relations of large-scale structures are modified when the initial density field is not Gaussian. We consider both scenarios where the primordial…
Evolution and Statistics of Non-Sphericity of Dark Matter Halos from Cosmological N-Body Simulation
Daichi Suto, Tetsu Kitayama, Takahiro Nishimichi +2
We revisit the non-sphericity of cluster-mass scale halos from cosmological N-body simulation on the basis of triaxial modelling. In order to understand the difference between the…
Robust covariance estimation of galaxy-galaxy weak lensing: validation and limitation of jackknife covariance
Masato Shirasaki, Masahiro Takada, Hironao Miyatake +4
We develop a method to simulate galaxy-galaxy weak lensing by utilizing all-sky, light-cone simulations and their inherent halo catalogs. Using the mock catalog to study the error…