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Cross-Correlation between UHECR Arrival Distribution and Large-Scale Structure
Hajime Takami, Takahiro Nishimichi, Kazuhiro Yahata +1
We investigate correlation between the arrival directions of ultra-high-energy cosmic rays (UHECRs) and the large-scale structure (LSS) of the Universe by using statistical quantit…
Modeling Nonlinear Evolution of Baryon Acoustic Oscillations: Convergence Regime of N-body Simulations and Analytic Models
Takahiro Nishimichi, Akihito Shirata, Atsushi Taruya +10
We use a series of cosmological N-body simulations and various analytic models to study the evolution of the matter power spectrum in real space in a ΛCold Dark Matter universe. We…
Simulations of Baryon Acoustic Oscillations I: Growth of Large-Scale Density Fluctuations
Ryuichi Takahashi, Naoki Yoshida, Takahiko Matsubara +8
We critically examine how well the evolution of large-scale density perturbations is followed in cosmological -body simulations. We first run a large volume simulation and perfo…