Upper limit on gravitational wave backgrounds at 0.2 Hz with a torsion-bar antenna

Koji Ishidoshiro, Masaki Ando, Akiteru Takamori, Hirotaka Takahashi, Kenshi Okada, Nobuyuki Matsumoto, Wataru Kokuyama, Nobuyuki Kanda, Yoichi Aso, Kimio Tsubono

研究成果: Article査読

37 被引用数 (Scopus)

抄録

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 Ωgw(f)<4.3×1017 at 0.2Hz as demonstration of the TOBA's capabilities, where Ωgw(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 100Hz) and the Cassini band (10-6-10 -4Hz).

本文言語English
論文番号161101
ジャーナルPhysical review letters
106
16
DOI
出版ステータスPublished - 2011 4 20
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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