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Constraining higher-order parameters for primordial non-Gaussianities from power spectra and bispectra of imaging survey
Ichihiko Hashimoto, Atsushi Taruya, Takahiko Matsubara +2
We investigate the statistical power of higher-order statistics and cross-correlation statistics to constrain the primordial non-Gaussianity from the imaging surveys. In particular…
Delensing Cosmic Microwave Background B-modes with the Square Kilometre Array Radio Continuum Survey
Toshiya Namikawa, Daisuke Yamauchi, Blake Sherwin +1
We explore the potential use of the Radio Continuum (RC) survey conducted by the Square Kilometre Array (SKA) to remove (delens) the lensing-induced B-mode polarization and thus en…
Anisotropies of gravitational-wave standard sirens as a new cosmological probe without redshift information
Toshiya Namikawa, Atsushi Nishizawa, Atsushi Taruya
Gravitational waves (GWs) from compact binary stars at cosmological distances are promising and powerful cosmological probes, referred to as the GW standard sirens. With future GW…
Non-Gaussian Structure of B-mode Polarization after Delensing
Toshiya Namikawa, Ryo Nagata
The B-mode polarization of the cosmic microwave background on large scales has been considered as a probe of gravitational waves from the cosmic inflation. Ongoing and future exper…
Delensing the CMB with the Cosmic Infrared Background
Blake D. Sherwin, Marcel Schmittfull
As confusion with lensing B-modes begins to limit experiments that search for primordial B-mode polarization, robust methods for delensing the CMB polarization sky are becoming inc…