Torsion-bar antenna for low-frequency gravitational-wave observations

Masaki Ando; Koji Ishidoshiro; Kazuhiro Yamamoto; Kent Yagi; Wataru Kokuyama; Kimio Tsubono; Akiteru Takamori

doi:10.1103/PhysRevLett.105.161101

Torsion-bar antenna for low-frequency gravitational-wave observations

Masaki Ando^*, Koji Ishidoshiro, Kazuhiro Yamamoto, Kent Yagi, Wataru Kokuyama, Kimio Tsubono, Akiteru Takamori

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

66 Scopus citations

Abstract

We propose a novel type of gravitational-wave antenna, formed by two bar-shaped test masses and laser-interferometric sensors to monitor their differential angular fluctuations. This antenna has a fundamental sensitivity to low-frequency signals below 1 Hz, even with a ground-based configuration. In addition, it is possible to expand the observation band to a lower limit determined by the observation time, by using modulation and up-conversion of gravitational-wave signals by rotation of the antenna. The potential sensitivity of this antenna is superior to those of current detectors in a 1 mHz-10 Hz frequency band and is sufficient for observations of gravitational waves radiated from in-spiral and merger events of intermediate-mass black holes.

Original language	English
Article number	161101
Journal	Physical Review Letters
Volume	105
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.105.161101
State	Published - 2010/10/11

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.105.161101

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abstract = "We propose a novel type of gravitational-wave antenna, formed by two bar-shaped test masses and laser-interferometric sensors to monitor their differential angular fluctuations. This antenna has a fundamental sensitivity to low-frequency signals below 1 Hz, even with a ground-based configuration. In addition, it is possible to expand the observation band to a lower limit determined by the observation time, by using modulation and up-conversion of gravitational-wave signals by rotation of the antenna. The potential sensitivity of this antenna is superior to those of current detectors in a 1 mHz-10 Hz frequency band and is sufficient for observations of gravitational waves radiated from in-spiral and merger events of intermediate-mass black holes.",

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AU - Ando, Masaki

AU - Ishidoshiro, Koji

AU - Yamamoto, Kazuhiro

AU - Yagi, Kent

AU - Kokuyama, Wataru

AU - Tsubono, Kimio

AU - Takamori, Akiteru

PY - 2010/10/11

Y1 - 2010/10/11

N2 - We propose a novel type of gravitational-wave antenna, formed by two bar-shaped test masses and laser-interferometric sensors to monitor their differential angular fluctuations. This antenna has a fundamental sensitivity to low-frequency signals below 1 Hz, even with a ground-based configuration. In addition, it is possible to expand the observation band to a lower limit determined by the observation time, by using modulation and up-conversion of gravitational-wave signals by rotation of the antenna. The potential sensitivity of this antenna is superior to those of current detectors in a 1 mHz-10 Hz frequency band and is sufficient for observations of gravitational waves radiated from in-spiral and merger events of intermediate-mass black holes.

AB - We propose a novel type of gravitational-wave antenna, formed by two bar-shaped test masses and laser-interferometric sensors to monitor their differential angular fluctuations. This antenna has a fundamental sensitivity to low-frequency signals below 1 Hz, even with a ground-based configuration. In addition, it is possible to expand the observation band to a lower limit determined by the observation time, by using modulation and up-conversion of gravitational-wave signals by rotation of the antenna. The potential sensitivity of this antenna is superior to those of current detectors in a 1 mHz-10 Hz frequency band and is sufficient for observations of gravitational waves radiated from in-spiral and merger events of intermediate-mass black holes.

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Torsion-bar antenna for low-frequency gravitational-wave observations

Abstract

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