The Decihertz, DECi-hertz Interferometer Gravitational wave Observatory (or DECIGO) is a proposed Japanese, space-based, gravitational wave observatory. The laser interferometric gravitational wave detector is so named because it is to be most sensitive in the frequency band between 0.1 and 10 Hz, filling in the gap between the sensitive bands of LIGO and Laser Interferometer Space Antenna, LISA. If funding can be found, its designers hope to launch it in 2027.
The design is similar to LISA, with three zero-drag satellites in a triangular arrangement, but using a smaller separation of only 1000 km whose relative displacements are measured by a Fabry–Pérot interferometer, Fabry–Pérot Michelson interferometer. The precursor mission B-DECIGO with 100 km long arms is planned to be launched in the late 2020s, target is an Earth orbit with an average altitude of 2000 km.
Shuichi Sato, Seiji Kawamura, Masaki Ando, Takashi Nakamura, Kimio Tsubono, Akito Araya, Ikkoh Funaki, Kunihito Ioka, Nobuyuki Kanda, Shigenori Moriwaki, "The status of DECIGO"
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See also
* Laser Interferometer Space Antenna (LISA)
* List of proposed space observatories
References
External links
DECIGO home page
(English)
Space telescopes
Interferometric gravitational-wave instruments
Astronomy in Japan
Proposed spacecraft
Satellites of Japan
2027 in science
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