Mathematics – Logic
Scientific paper
Nov 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996cqgra..13a.251c&link_type=abstract
Classical and Quantum Gravity, Volume 13, Issue 11A, pp. A251-A258 (1996).
Mathematics
Logic
Scientific paper
A gravitational-wave observatory is recommended as the seventh cornerstone in ESA's long-term programme in space science, known as `Horizon 2000 Plus'. A concept for such a gravitational-wave mission, LISA, was studied within ESA in order to assess its feasibility and technological requirements. Six spacecraft in a triangular configuration form a laser interferometer with baselines of 0264-9381/13/11A/034/img1. This interferometer will orbit the Sun at a heliocentric radius of approximately 1 AU, following the Earth at an angular distance of 0264-9381/13/11A/034/img2. Launch of all six spacecraft will be with an Ariane 5 launch vehicle and jettisonable propulsion modules will place the spacecraft in their respective orbits. All six spacecraft are identical and accommodate a payload module which houses a test mass with capacitive sensors, a transmit - receive telescope and lasers. The interferometer arms are determined by the test masses and the spacecraft must shield the test mass from all extraneous disturbances, requiring a `drag-free' control system which uses electric thrusters to make the spacecraft follow the test mass.
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