535 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute for Cosmic Ray ResearchJP14 papers
- The University of TokyoJP14 papers
- National Astronomical Observatory of JapanJP9 papers
- Fukuoka UniversityJP7 papers
- Tokyo Institute of TechnologyJP6 papers
- California Institute of TechnologyUS5 papers
- High Energy Accelerator Research OrganizationJP5 papers
- Nagoya UniversityJP5 papers
- The Graduate University for Advanced Studies, SOKENDAIJP5 papers
- University of ToyamaJP5 papers
- Waseda UniversityJP5 papers
- Centre National de la Recherche ScientifiqueFR4 papers
14 papers
Compact integrated optical sensors and electromagnetic actuators for vibration isolation systems in the gravitational-wave detector KAGRA
Tomotada Akutsu, Fabián Erasmo Peña Arellano, Ayaka Shoda +18
This paper reports on the design and characteristics of a compact module integrating an optical displacement sensor and an electromagnetic actuator for use with vibration-isolation…
High Performance Heat Conductor with Small Spring Constant for Cryogenic Applications
Tomohiro Yamada, Takayuki Tomaru, Toshikazu Suzuki +5
We developed a soft and high thermal conductive heat link for cryogenic applications. The measured maximum thermal conductivity was approximately 18500 W/m/K at 10 K. This spring c…
Design and experimental demonstration of a laser modulation system for future gravitational-wave detectors
Kohei Yamamoto, Keiko Kokeyama, Yuta Michimura +12
Detuning the signal-recycling cavity length from a cavity resonance significantly improves the quantum noise beyond the standard quantum limit, while there is no km-scale gravitati…
Application of the independent component analysis to the iKAGRA data
KAGRA Collaboration, T. Akutsu, M. Ando +244
We apply the independent component analysis (ICA) to the real data from a gravitational wave detector for the first time. Specifically we use the iKAGRA data taken in April 2016, a…
Prospects for gravitational-wave polarization test from compact binary mergers with future ground-based detectors
Hiroki Takeda, Atsushi Nishizawa, Koji Nagano +4
There exist six possible polarization modes of gravitational waves in general metric theory of gravity, while two tensor polarization modes are allowed in general relativity. The p…
First cryogenic test operation of underground km-scale gravitational-wave observatory KAGRA
KAGRA Collaboration, T. Akutsu, M. Ando +198
KAGRA is a second-generation interferometric gravitational-wave detector with 3-km arms constructed at Kamioka, Gifu in Japan. It is now in its final installation phase, which we c…
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…
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…
Circular polarization of gravitational waves from non-rotating supernova cores: a new probe into the pre-explosion hydrodynamics
Kazuhiro Hayama, Takami Kuroda, Kei Kotake +1
We present an analysis of the circular polarization of gravitational-waves (GWs) using results from three-dimensional (3D), general relativistic (GR) core-collapse simulations of a…
Measurement and subtraction of Schumann resonances at gravitational-wave interferometers
Michael W. Coughlin, Alessio Cirone, Patrick Meyers +23
Correlated magnetic noise from Schumann resonances threatens to contaminate the observation of a stochastic gravitational-wave background in interferometric detectors. In previous…
External quantum efficiency enhancement by photon recycling with backscatter evasion
Koji Nagano, Antonio Perreca, Koji Arai +1
The nonunity quantum efficiency (QE) in photodiodes (PD) causes deterioration of signal quality in quantum optical experiments due to photocurrent loss as well as the introduction…
Mirror actuation design for the interferometer control of the KAGRA gravitational wave telescope
Yuta Michimura, Tomofumi Shimoda, Takahiro Miyamoto +36
KAGRA is a 3-km cryogenic interferometric gravitational wave telescope located at an underground site in Japan. In order to achieve its target sensitivity, the relative positions o…
Circular polarizations of gravitational waves from core-collapse supernovae: a clear indication of rapid rotation
Kazuhiro Hayama, Takami Kuroda, Ko Nakamura +1
We propose to employ the circular polarization of gravitational waves emitted by core-collapse supernovae as an unequivocal indication of rapid rotation deep in their cores. It has…
Multi-messenger signals of long-term core-collapse supernova simulations : synergetic observation strategies
Ko Nakamura, Shunsaku Horiuchi, Masaomi Tanaka +3
The next Galactic supernova is expected to bring great opportunities for the direct detection of gravitational waves (GW), full flavor neutrinos, and multi-wavelength photons. To m…