Numerical modelling of scintillation variations from interplanetary disturbances

Details Numerical modelling of scintillation variations from interplanetary disturbances Numerical modelling of scintillation variations from interplanetary disturbances

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987p%26ss...35..271t&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 35, March 1987, p. 271-283.

Astronomy and Astrophysics

Astronomy

13

Interplanetary Medium, Scintillation, Solar Wind, Astronomical Maps, Computer Programs, Mathematical Models, Propagation Velocity

Scientific paper

A simple system of empirical modeling is developed for the interpretation of 81.5 MHz interplanetary scintillations caused by arbitrary interplanetary disturbances. Calculation examples from a set of idealized disturbances which can be used as the starting points for the interpretation of real disturbances are presented. The modeling is applied to a disturbance first seen on September 18, 1980. It is found that the leading edge of a spherical shell centered on the sun will appear to follow a line of constant elongation, with more strongly curved sky projections requiring more strongly curved shells. Disturbances travelling at large angles to the sun-earth line slow down and fade out at 90 deg.

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