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Non-Gaussian Error Contribution to Likelihood Analysis of the Matter Power Spectrum
Ryuichi Takahashi, Naoki Yoshida, Masahiro Takada +6
We study the sample variance of the matter power spectrum for the standard Lambda Cold Dark Matter universe. We use a total of 5000 cosmological N-body simulations to study in deta…
High-precision predictions for the acoustic scale in the non-linear regime
Hee-Jong Seo, Jonathan Eckel, Daniel J. Eisenstein +7
We measure shifts of the acoustic scale due to nonlinear growth and redshift distortions to a high precision using a very large volume of high-force-resolution simulations. We comp…
Simulations of Wide-Field Weak Lensing Surveys I: Basic Statistics and Non-Gaussian Effects
Masanori Sato, Takashi Hamana, Ryuichi Takahashi +4
We study the lensing convergence power spectrum and its covariance for a standard LCDM cosmology. We run 400 cosmological N-body simulations and use the outputs to perform a total…
Simulations of Baryon Acoustic Oscillations II: Covariance matrix of the matter power spectrum
Ryuichi Takahashi, Naoki Yoshida, Masahiro Takada +7
We use 5000 cosmological N-body simulations of 1(Gpc/h)^3 box for the concordance LCDM model in order to study the sampling variances of nonlinear matter power spectrum. We show th…