415 citations · 1.3k across the 21 of their papers we have counts for
7 papers · 1 filter
Tensor-to-scalar ratio forecasts for extended LiteBIRD frequency configurations
U. Fuskeland, J. Aumont, R. Aurlien +114
LiteBIRD is a planned JAXA-led CMB B-mode satellite experiment aiming for launch in the late 2020s, with a primary goal of detecting the imprint of primordial inflationary gravitat…
In-flight polarization angle calibration for LiteBIRD: blind challenge and cosmological implications
Nicoletta Krachmalnicoff, Tomotake Matsumura, Elena de la Hoz +67
We present a demonstration of the in-flight polarization angle calibration for the JAXA/ISAS second strategic large class mission, LiteBIRD, and estimate its impact on the measurem…
A numerical study of observational systematic errors in lensing analysis of CMB polarization
Ryo Nagata, Toshiya Namikawa
Impacts of observational systematic errors on the lensing analysis of the cosmic microwave background (CMB) polarization are investigated by numerical simulations. We model errors…
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…
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…
Lensing reconstruction from a patchwork of polarization maps
Toshiya Namikawa, Ryo Nagata
The lensing signals involved in CMB polarization maps have already been measured with ground-based experiments such as SPTpol and POLARBEAR, and would become important as a probe o…
Cosmic Discordance: Detection of a modulation in the primordial fluctuation spectrum
Kiyotomo Ichiki, Ryo Nagata, Jun'ichi Yokoyama
As a test of the standard inflationary cosmology, which generically predicts nearly scale-invariant spectrum of primordial curvature fluctuations, we perform Markov-Chain Monte-Car…