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The Distribution Function of the Phase Sum as a Signature of Phase Correlations Induced by Nonlinear Gravitational Clustering
Chiaki Hikage, Takahiko Matsubara, Yasushi Suto
We explore a signature of phase correlations in Fourier modes of dark matter density fields induced by nonlinear gravitational clustering. We compute the distribution function of t…
Minkowski Functionals of SDSS galaxies I : Analysis of Excursion Sets
Chiaki Hikage, Jens Schmalzing, Thomas Buchert +7
We present a first morphometric investigation of a preliminary sample from the SDSS of 154287 galaxies with apparent magnitude 14.5<m_r<17.5 and redshift 0.001<z<0.4. We measure th…
Biasing and Genus Statistics of Dark Matter Halos in the Hubble Volume Simulation
Chiaki Hikage, Atsushi Taruya, Yasushi Suto
We present a numerical analysis of genus statistics for dark matter halo catalogs from the Hubble volume simulation. The huge box-size of the Hubble volume simulation enables us to…