Gradiometry and gravitomagnetic field detection

Details Gradiometry and gravitomagnetic field detection Gradiometry and gravitomagnetic field detection

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989nascp3046..132m&link_type=abstract

In NASA, Relativistic Gravitational Experiments in Space p 132-136 (SEE N90-19940 12-90)

Physics

Field Intensity Meters, Gravitational Effects, Gravitational Fields, Gravity Gradiometers, Magnetic Fields, Earth Rotation, Electrodynamics, Relativity

Scientific paper

Gravitomagnetism was apparently first introduced into physics about 120 years ago when major developments in electrodynamics and the strong similarity between Coulomb's law of electricity and Newton's law of gravity led to the hypothesis that mass current generates a fundamental force of gravitational origin analogous to the magnetic force caused by charge current. According to general relativity, the rotation of a body leads to the dragging of the local inertial frames. In the weak-field approximation, the dragging frequency can be interpreted, up to a constant proportionality factor, as a gravitational magnetic field. There is, as yet, no direct evidence regarding the existence of such a field. The possibility is examined of detecting the gravitomagnetic field of the Earth by gravity gradiometry.

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