On the passage of radiation through inhomogeneous, moving media. XI - Nonlinear effects on ray paths in the geometrical optics approximation

Details On the passage of radiation through inhomogeneous, moving media. XI - Nonlinear effects on ray paths in the geometrical optics approximation On the passage of radiation through inhomogeneous, moving media. XI - Nonlinear effects on ray paths in the geometrical optics approximation

Dec 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974apj...194..409l&link_type=abstract

Astrophysical Journal, vol. 194, Dec. 1, 1974, pt. 1, p. 409-417.

Physics

Optics

5

Pulsar Magnetospheres, Pulsars, Radiative Transfer, Ray Tracing, Shear Flow, Astronomical Models, Atmospheric Optics, Magnetohydrodynamic Flow, Nonuniform Plasmas, Numerical Analysis, Phase Velocity, Refractivity

Scientific paper

Study illustrating how the presence of a high-intensity pulse of radiation can distort its own passage through a plane differentially shearing medium. It is demonstrated that the distortion is a sensitive function of the precise, and detailed, variation of the medium's refractive index by considering a couple of simple examples which are worked out numerically. In view of the high-intensity pulses observed from pulsars (approximately 10 to the 30th ergs per pulse), it is believed that the present calculations are of more than academic interest in helping unravel the fundamental properties of pulse production in, and propagating through, differentially sheared media - such as pulsars' magnetospheres within the so-called speed-of-light circle.

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