Lunar electromagnetic scattering. III - Propagation at arbitrary angles to the cavity axis

Details Lunar electromagnetic scattering. III - Propagation at arbitrary angles to the cavity axis Lunar electromagnetic scattering. III - Propagation at arbitrary angles to the cavity axis

Nov 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975jgr....80.4215h&link_type=abstract

Journal of Geophysical Research, vol. 80, Nov. 1, 1975, p. 4215-4229.

Astronomy and Astrophysics

Astronomy

1

Electromagnetic Scattering, Electromagnetic Surface Waves, Interplanetary Magnetic Fields, Lunar Magnetic Fields, Propagation Modes, Astronomical Models, Boundary Value Problems, Lunar Surface, Magnetic Induction, Solar Wind, Time Dependence

Scientific paper

An analytic theory is developed for both the steady state and the time-dependent electric and magnetic fields inside the moon and its downstream cavity for interplanetary electromagnetic field fluctuations incident at arbitrary angles to the cavity axis. The moon model has an electrical conductivity, electrical permittivity, and magnetic permeability which vary arbitrarily with radius. The cavity downstream of the moon in the solar wind is assumed to be an infinitely long nonconducting cylinder. If the interplanetary field fluctuations propagate parallel to the cavity, the far cavity field is a single cylindrical transverse electric mode propagating downstream with the same frequency, wavelength, and phase velocity as the interplanetary field. The far cavity field is the result of a forced surface wave on the cylindrical boundary of the void. When the interplanetary fluctuations are incident at an arbitrary angle to the cavity axis, the far cavity field is a superposition of an infinite number of cylindrical TE and TM modes.

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