GW4 - Middle-Frequency (0.1 Hz to 10 Hz) Gravitational Wave (GW) Detection and its Sources |
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Speaker |
Ni, Wei-Tou |
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Coauthors |
Ni, Wei-Tou; Wang, Gang; Wu, An-Ming |
| Talk Title |
Astrodynamical middle-frequency interferometric gravitational wave observatory AMIGO: Mission Concept And orbit design |
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Abstract |
AMIGO is a first-generation Astrodynamical Middle-frequency Interferometric GW Observatory. The scientific goals of AMIGO are: to bridge the spectra gap between first-generation high-frequency and low-frequency GW sensitivities; detecting intermediate mass BH coalescence; detecting inspiral phase and predict time of binary black hole coalescence together with neutron star coalescence for ground interferometers; detecting compact binary inspirals for studying stellar evolution and galactic population. The mission concept is to use time delay interferometry for a nearly triangular formation of 3 drag-free spacecraft with nominal arm length 10,000 km, emitting laser power 2-10 W and telescope diameter 300-360 mm. The design GW sensitivity in the middle frequency band is 3 × 10−21 Hz-1. Four options of orbits are under study: (i) Earth-like solar orbits (3-20 degrees behind the Earth); (ii) 600,000 km high orbit formation around the Earth; (iii) 100,000 km-250,000 high orbit formation around the Earth; (iv) near Earth-Moon L4 (or L5) halo orbit formation. All four options have LISA-like formations, that is the triangular formation is 60º inclined to the orbit plane. |
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