Propagation paths of SKR

Details Propagation paths of SKR Propagation paths of SKR

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aipc..283..418g&link_type=abstract

The earth and space science information system (ESSIS). AIP Conference Proceedings, Volume 283, pp. 418-418 (1993).

Statistics

Computation

Saturn

Scientific paper

Propagation paths of Saturian Kilometric Radiation (SKR) are determined using ray tracing computations and results are compared with those obtained by the Voyager 1 Spacecraft. For the computation of ray paths ionospheric model similar to that suggested by Galopeau et al. (1989) has been used which includes both the ionospheric as well as torus densities. A dipole magnetic field is assumed. The Source location are assumed between 0-3 Rs (Saturnian radii) along the field line of 75 degree North and the initial wave normal angle are assumed to be field aligned. The computer program used is similar to that of Shawhan (1967). The ray paths are computed for different frequencies of the SKR in the range of 3 kHZ-1 MHz.
The result shows that the lowest frequencies are refracted more than the higher frequencies from the torus and effect diminishes with increasing frequencies. This explains the existence of the shadow zone near the equator as seen in the observations of SKR. Further, the results also explain the spectral characteristics of the SKR. The effect of Dione control is thoroughly discussed.

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