Gravitational waves from solar oscillations - Proposal for a transition-zone test of general relativity

Details Gravitational waves from solar oscillations - Proposal for a transition-zone test of general relativity Gravitational waves from solar oscillations - Proposal for a transition-zone test of general relativity

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985cqgra...2..381f&link_type=abstract

Classical and Quantum Gravity (ISSN 0264-9381), vol. 2, May 1, 1985, p. 381-402.

Computer Science

6

Gravitation Theory, Gravitational Fields, Gravitational Wave Antennas, Relativity, Solar Oscillations, Phase Shift, Solar System, Spaceborne Experiments, Spin, Tides

Scientific paper

Observed oscillations of the sun with five to ten minute periods are a predicted source of gravitational radiation with a strain at the earth of about 10 to the -26th. In the transition zone (2 pi r of about lambda, inner part of the solar system) the dynamical character of the gravitational field emerges as a phase shift of the oscillatory tidal force relative to the phase of the solar oscillations. The phase shift is sensitive to the spin of the gravitational field, suggesting a test of the spin composition of relativistic gravity. This paper investigates and compares the transition-zone phase shift for three pure-spin theories: Nordstrom's (1913) a spin-0 theory; a vector theory analogous to electromagnetism (spin-1), and general relativity (spin-2); and Jordan-Brans-Dicke theory in which gravity is a mixture of spins 2 and 0. The solar gravitational waves might be detectable, near the turn of the century, by optically linked gravitational antennas flown in space. Such detection would permit a direct measurement of the spin composition of relativistic gravity.

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