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Electromagnetic Field and Wave Propagation in Gravitation

Mo, Tse Chin and Papas, C. H. (1971) Electromagnetic Field and Wave Propagation in Gravitation. Physical Review D, 3 (8). pp. 1708-1712. ISSN 2470-0010. doi:10.1103/PhysRevD.3.1708.

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From the physical three-vector Maxwell equations for an electromagnetic (E.M.) field in static gravitation, we examine the artifice of replacing the gravitation by an equivalent medium and we find modified Debye potentials for an E.M. wave in a simple, angularly homogeneous, material medium in a Schwarzs-child gravitational field. The fact that these potentials do not obey the generalized scalar wave equation implies that gravitation scatters the vector E.M. wave and a scalar wave differently. Also, we obtain and solve by perturbation the amplitude and eikonal equations for a high-frequency wave in a weak spherical gravitational field. To the order M/r, the state of transverse polarization does not change along a ray path whereas the transverse-field amplitudes are modified by the factor e^(M/r) which strengthens the field near the mass. The longitudinal-field amplitude, on the other hand, is modified by e^(−M/r). These effects, in principle, may provide a further test of classical E.M. theory and general relativity.

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Additional Information:© 1971 American Physical Society. Received 10 December 1970. This work was supported by the U. S. Air Force Office of Scientific Research, Grant No. AFOSR 70-1935.
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Air Force Office of Scientific Research (AFOSR)AFOSR 70-1935
Issue or Number:8
Record Number:CaltechAUTHORS:20170810-101614131
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:80074
Deposited By: Tony Diaz
Deposited On:10 Aug 2017 17:27
Last Modified:15 Nov 2021 17:52

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