Measurements of a solar flare-generated shock wave at 13.1 R/0/

Details Measurements of a solar flare-generated shock wave at 13.1 R/0/ Measurements of a solar flare-generated shock wave at 13.1 R/0/

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.292..608w&link_type=abstract

Nature, vol. 292, Aug. 13, 1981, p. 608-610.

Computer Science

40

Electron Density (Concentration), Radio Scattering, Shock Wave Propagation, Solar Flares, Solar Wind, International Sun Earth Explorers, Scintillation, Solar Wind Velocity, Voyager 1 Spacecraft

Scientific paper

The first measurements of the structure of wind speed, electron density, and electron density fluctuations are reported for a shock wave propagating through the acceleration region of the solar wind. Radio scattering observations, consisting of spectral broadening, mean phase and amplitude scintillations, were made on August 18, 1979, 13.1 solar radii east of the sun near the ecliptic plane, using the 2.3 and 8.4 GHz radio signals of Voyager 1. The results show a shock wave speed of about 3,500 km/sec; which, when compared with average transit time speed to 1 AU, shows that substantial deceleration took place with outward propagation from the sun. This result is consistent with a blast wave.

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