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- The University of TokyoJP9 papers
- Kyoto UniversityJP7 papers
- National Astronomical Observatory of JapanJP6 papers
- Otsuka (Japan)JP6 papers
- Tokyo Institute of TechnologyJP3 papers
- Tokyo University of ScienceJP3 papers
- Waseda UniversityJP3 papers
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- High Energy Accelerator Research OrganizationJP2 papers
- Japan Agency for Marine-Earth Science and TechnologyJP2 papers
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6 papers · 1 filter
Development of displacement- and frequency-noise-free interferometer in 3-D configuration for gravitational wave detection
K. Kokeyama, S. Sato, A. Nishizawa +3
The displacement- and frequency-noise-free interferometer (DFI) is a multiple laser interferometer array for gravitational wave detection free from both the displacement noise of o…
Development of signal-extraction scheme for Resonant Sideband Extraction
K. Kokeyama, K. Somiya, F. Kawazoe +3
As a future plan, an advanced gravitational-wave detector will employ an optical configuration of resonant sideband extraction (RSE), achieved with an additional mirror at the sign…
Search for a stochastic background of 100-MHz gravitational waves with laser interferometers
Tomotada Akutsu, Seiji Kawamura, Atsushi Nishizawa +11
This letter reports the results of a search for a stochastic background of gravitational waves (GW) at 100 MHz by laser interferometry. We have developed a GW detector, which is a…
Laser-interferometric Detectors for Gravitational Wave Background at 100 MHz : Detector Design and Sensitivity
Atsushi Nishizawa, Seiji Kawamura, Tomotada Akutsu +8
Recently, observational searches for gravitational wave background (GWB) have developed and given direct and indirect constraints on the energy density of GWB in a broad range of f…
Results of the search for inspiraling compact star binaries from TAMA300's observation in 2000-2004
TAMA Collaboration, T. Akutsu
We analyze the data of TAMA300 detector to search for gravitational waves from inspiraling compact star binaries with masses of the component stars in the range 1-3Msolar. In this…
Information Entropy in Cosmology
Akio Hosoya, Thomas Buchert, Masaaki Morita
The effective evolution of an inhomogeneous cosmological model may be described in terms of spatially averaged variables. We point out that in this context, quite naturally, a meas…