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KAGRA: 2.5 Generation Interferometric Gravitational Wave Detector
T. Akutsu, M. Ando, K. Arai +188
The recent detections of gravitational waves (GWs) reported by LIGO/Virgo collaborations have made significant impact on physics and astronomy. A global network of GW detectors wil…
Demonstration of displacement sensing of a mg-scale pendulum for mm- and mg- scale gravity measurements
Nobuyuki Matsumoto, Masakazu Sugawara, Seiya Suzuki +6
Gravity generated by large masses has been observed using a variety of probes from atomic interferometers to torsional balances. However, gravitational coupling between small masse…
Polarization test of gravitational waves from compact binary coalescences
Hiroki Takeda, Atsushi Nishizawa, Yuta Michimura +4
Gravitational waves have only two polarization modes in General Relativity. However, there are six possible modes of polarization in metric theory of gravity in general. The tests…
Particle swarm optimization of the sensitivity of a cryogenic gravitational wave detector
Yuta Michimura, Kentaro Komori, Atsushi Nishizawa +6
Cryogenic cooling of the test masses of interferometric gravitational wave detectors is a promising way to reduce thermal noise. However, cryogenic cooling limits the incident powe…
A Direct Approach for the Fluctuation-Dissipation Theorem under Non-Equilibrium Steady-State Conditions
Kentaro Komori, Yutaro Enomoto, Hiroki Takeda +4
The test mass suspensions of cryogenic gravitational-wave detectors such as the KAGRA project are tasked with extracting the heat deposited on the optics. Thus these suspensions ha…