Search for a stochastic background of 100-MHz gravitational waves with laser interferometers

被引:86
作者
Akutsu, Tomotada [1 ]
Kawamura, Seiji [2 ]
Nishizawa, Atsushi [3 ]
Arai, Koji [2 ]
Yamamoto, Kazuhiro [2 ]
Tatsumi, Daisuke [2 ]
Nagano, Shigeo [4 ]
Nishida, Erina [5 ]
Chiba, Takeshi [6 ]
Takahashi, Ryuichi [7 ]
Sugiyama, Naoshi [7 ]
Fukushima, Mitsuhiro [2 ]
Yamazaki, Toshitaka [2 ]
Fujimoto, Masa-Katsu [2 ]
机构
[1] Univ Tokyo, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan
[2] Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
[3] Kyoto Univ, Grad Sch Human & Environm Studies, Kyoto 6068501, Japan
[4] Natl Inst Informat & Commun Technol, Koganei, Tokyo 1848795, Japan
[5] Ochanomizu Univ, Grad Sch Humanities & Sci, Bunkyo Ku, Tokyo 1128610, Japan
[6] Nihon Univ, Coll Humanities & Sci, Dept Phys, Tokyo 1568550, Japan
[7] Nagoya Univ, Grad Sch Sci, Nagoya, Aichi 4648602, Japan
关键词
D O I
10.1103/PhysRevLett.101.101101
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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 pair of 75-cm baseline synchronous recycling (resonant recycling) interferometers. Each interferometer has a strain sensitivity of similar to 10(-16) Hz(-1/2) at 100 MHz. By cross-correlating the outputs of the two interferometers within 1000 seconds, we found h(100)(2)Omega(gw)< 6x10(25) to be an upper limit on the energy density spectrum of the GW background in a 2-kHz bandwidth around 100 MHz, where a flat spectrum is assumed.
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页数:4
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