980 citations · 2.9k across the 51 of their papers we have counts for
3 papers · 1 filter
Readout system with on-board demodulation for CMB polarization experiments using coherent polarimeter arrays
Koji Ishidoshiro, Makoto Nagai, Takeo Higuchi +6
B-modes are special patterns in cosmic microwave background (CMB) polarization. The detection of them is a smoking-gun signature of primordial gravitational waves. The generic stra…
Upper Limit on Gravitational Wave Backgrounds at 0.2 Hz with Torsion-bar Antenna
Koji Ishidoshiro, Masaki Ando, Akiteru Takamori +7
We present the first upper limit on gravitational wave (GW) backgrounds at an unexplored frequency of 0.2 Hz using a torsion-bar antenna (TOBA). A TOBA was proposed to search for l…
Calibration System with Cryogenically-Cooled Loads for CMB Polarization Detectors
M. Hasegawa, O. Tajima, Y. Chinone +3
We present a novel system to calibrate millimeter-wave polarimeters for CMB polarization measurements. This technique is an extension of the conventional metal mirror rotation appr…