Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Naonori S. Sugiyama"'
Autor:
Naonori S Sugiyama, Daisuke Yamauchi, Tsutomu Kobayashi, Tomohiro Fujita, Shun Arai, Shin’ichi Hirano, Shun Saito, Florian Beutler, Hee-Jong Seo
Publikováno v:
Monthly Notices of the Royal Astronomical Society.
We report a new test of modified gravity theories using the large-scale structure of the Universe. This paper is the first attempt to (1) apply a joint analysis of the anisotropic components of galaxy two- and three-point correlation functions (2 and
Autor:
Daisuke Yamauchi, Naonori S. Sugiyama
We investigate the galaxy bispectrum induced by the nonlinear gravitational evolution as a possible probe to constrain degenerate higher-order scalar tensor (DHOST) theories. We find that the signal obtained from the leading kernel of second-order de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ddcf19619c0628084ffd8f0cce99c549
http://arxiv.org/abs/2108.02382
http://arxiv.org/abs/2108.02382
Publikováno v:
Physical Review D. 103
Galaxy bispectrum is a promising probe of inflationary physics in the early universe as a measure of primordial non-Gaussianity (PNG), whereas its signal-to-noise ratio is significantly affected by the mode coupling due to non-linear gravitational gr
We study an efficient way to enhance the measurability of the galaxy density and/or velocity power spectrum in redshift space. It is based on the angular decomposition with the Tripolar spherical harmonic (TripoSH) basis and applicable even to galaxy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7810491b526f68b70414c3ade7d8d9a
http://arxiv.org/abs/2005.03438
http://arxiv.org/abs/2005.03438
We establish a practical method for the joint analysis of anisotropic galaxy two- and three-point correlation functions (2PCF and 3PCF) on the basis of the decomposition formalism of the 3PCF using tri-polar spherical harmonics. We perform such an an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84f89798742b2a9677d7acb6c96dc36c
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 475:3764-3785
We present the measurement of the kinematic Sunyaev-Zel'dovich (kSZ) effect in Fourier space, rather than in real space. We measure the density-weighted pairwise kSZ power spectrum, the first use of this promising approach, by cross-correlating a cle
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 473:2737-2752
We measure statistically anisotropic signatures imprinted in three-dimensional galaxy clustering using bipolar spherical harmonics (BipoSHs) in both Fourier space and configuration space. We then constrain a well-known quadrupolar anisotropy paramete
The super-sample tidal effect carries information on long-wavelength fluctuations that we cannot measure directly. It arises from the mode-coupling between short-wavelength and long-wavelength perturbations beyond a finite region of a galaxy survey a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fd4f4d54cff4bd2039d4958ca5c9495
http://arxiv.org/abs/1907.10591
http://arxiv.org/abs/1907.10591
In this paper, we predict the covariance matrices of both the power spectrum and the bispectrum, including full non-Gaussian contributions, redshift space distortions, linear bias effects and shot-noise corrections, using perturbation theory (PT). To
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a1bb3a98865b32f48f3e8b32ac40e11
Publikováno v:
Sugiyama, N S, Saito, S, Beutler, F & Seo, H J 2019, ' A complete FFT-based decomposition formalism for the redshift-space bispectrum ', Monthly Notices of the Royal Astronomical Society, vol. 484, no. 1, pp. 364-384 . https://doi.org/10.1093/mnras/sty3249
To fully extract cosmological information from nonlinear galaxy distribution in redshift space, it is essential to include higher-order statistics beyond the two-point correlation function. In this paper, we propose a new decomposition formalism for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cd590d5f783f97233485c3d97f2c772