Doppler scintillation observations of interplanetary shocks within 0.3 AU

Details Doppler scintillation observations of interplanetary shocks within 0.3 AU Doppler scintillation observations of interplanetary shocks within 0.3 AU

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90..154w&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, Jan. 1, 1985, p. 154-162. NASA-supported research.

Physics

55

Interplanetary Space, Scintillation, Shock Wave Propagation, Solar Wind, Electron Density (Concentration), Propagation Velocity, Solar Flares, Velocity Distribution

Scientific paper

It is pointed out that more definitive shock velocity observations near the sun are needed for an improved determination of the extent of shock deceleration from the sun to earth. Woo and Armstrong (1981) have demonstrated the use of radio scattering and scintillation observations, using spacecraft signals, for measuring interplanetary shock waves near the sun. Woo and Armstrong provided the first near-sun profiles of solar wind speed and electron density fluctuation for a shock wave produced by a solar flare. The present investigation has the objective to demonstrate the use of Doppler or phase scintillations for monitoring and observing interplanetary shocks. It is also shown that Doppler noise, a parameter which is routinely observed and recorded by the NASA Deep Space Network, is essentially a measure of Doppler scintillations.

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