2011年4月
Upper Limit on Gravitational Wave Backgrounds at 0.2 Hz with a Torsion-Bar Antenna
PHYSICAL REVIEW LETTERS
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- 巻
- 106
- 号
- 16
- 開始ページ
- 161101
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevLett.106.161101
- 出版者・発行元
- AMER PHYSICAL SOC
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 low-frequency GWs. We have developed a small-scaled TOBA and successfully found Omega(gw)(f) < 4.3 x 10(17) at 0.2 Hz as demonstration of the TOBA's capabilities, where Omega(gw)(f) is the GW energy density per logarithmic frequency interval in units of the closure density. Our result is the first nonintegrated limit to bridge the gap between the LIGO band (around 100 Hz) and the Cassini band (10(-6)-10(-4) Hz).
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevLett.106.161101
- ISSN : 0031-9007
- Web of Science ID : WOS:000290096400002