Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980amsci..68..174b&link_type=abstract
American Scientist, vol. 68, Mar.-Apr. 1980, p. 174-183.
Astronomy and Astrophysics
Astronomy
Gravitational Wave Antennas, Gravitational Waves, Radiation Detectors, Black Holes (Astronomy), Cosmology, Gravitation Theory, Holographic Interferometry, Piezoelectric Gages, Radiation Sources, Strain Gages
Scientific paper
The experimental detection of gravitational waves is discussed. Consideration is given to the physical nature of gravitational waves and its implications for their detection by the measurement of the relative motion of two particles at different positions. The weakness of gravitational radiation and further difficulties in its detection are pointed out, and significant astrophysical sources of gravitational waves of various frequencies, such as the solar core, neutron stars, a primordial black body, gravitational stellar collapse, and binary stars, are indicated. The gravitational wave detectors based on resonant mass, laser interferometry and the Doppler ranging of interplanetary spacecraft are presented, and progress in detecting gravitational radiation by these systems is surveyed, noting the observation made by Taylor (1979) of energy, corresponding to gravitational radiation, lost by the binary pulsar. It is concluded, however, that if gravitational wave astronomy is to survive, direct observation must be made of gravitational radiation emitted by more violent processes.
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