12 citations · 20 across the 2 of their papers we have counts for
8 papers
Alcock-Paczynski effects on wide-angle galaxy statistics
Maresuke Shiraishi, Kazuyuki Akitsu, Teppei Okumura
The Alcock-Paczynski (AP) effect is a geometrical distortion in three-dimensional observed galaxy statistics. In anticipation of precision cosmology based on ongoing and upcoming a…
Wide-angle effects on galaxy ellipticity correlations
Maresuke Shiraishi, Atsushi Taruya, Teppei Okumura +1
We show an efficient way to compute wide-angle or all-sky statistics of galaxy intrinsic alignment in three-dimensional configuration space. For this purpose, we expand the two-poi…
Cosmological simulation in tides: power spectra and halo shape responses, and shape assembly bias
Kazuyuki Akitsu, Yin Li, Teppei Okumura
The well-developed separate universe technique enables accurate calibration of the response of any observable to an isotropic long-wavelength density fluctuation. The large-scale e…
Galaxy imaging surveys as spin-sensitive detector for cosmological colliders
Kazuhiro Kogai, Kazuyuki Akitsu, Fabian Schmidt +1
Galaxy imaging surveys provide us with information on both the galaxy distribution and their shapes. In this paper, we systematically investigate the sensitivity of galaxy shapes t…
Minimum variance estimation of statistical anisotropy via galaxy survey
Maresuke Shiraishi, Teppei Okumura, Kazuyuki Akitsu
We consider the benefits of measuring cosmic statistical anisotropy from redshift-space correlators of the galaxy number density fluctuation and the peculiar velocity field without…
Imprint of anisotropic primordial non-Gaussianity on halo intrinsic alignments in simulations
Kazuyuki Akitsu, Toshiki Kurita, Takahiro Nishimichi +2
Using -body simulations of cosmological large-scale structure formation, for the first time, we show that the anisotropic primordial non-Gaussianity (PNG) causes a scale-depende…