Statistics – Applications
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.226..157f&link_type=abstract
In ESA Colloq. in Kilometric Opt. Arrays in Space p 157-163 (SEE N86-11096 01-89)
Statistics
Applications
5
Antenna Design, Gravitational Effects, Gravitational Wave Antennas, Spaceborne Astronomy, Gravity Waves, Laser Applications, Solar Orbits, Very Long Base Interferometry
Scientific paper
Designs for a laser gravitational wave antenna in space using free test masses and heterodyne (interferometric) detection were investigated. Use of 1 million km baselines between three spacecraft in nearly circular 1 yr solar orbit is considered. With milliwatt-transmitted laser power levels and 50 cm diameter optics, a strain sensitivity of 10 to the minus 19th power per sq root Hz over at least the period range from 10 to 10,000 sec is feasible. The measurements observe gravitational radiation associated with present or past interactions of supermassive objects. Binary sources can also be studied. For periods 10 sec the sensitivity for a baseline length of 1 million km degrades as a result of multiple gravitational wavelengths being contained in the arm lengths. For longer periods, the main limitation is likely to come from spurious accelerations due to forces other than the gravitational attraction of the Sun and planetary bodies.
Bender Peter L.
Faller James E.
Hall Jeffery L.
Hils Dieter
Vincent Mark A.
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