Simultaneous radio scattering and white light observations of a coronal transient

Details Simultaneous radio scattering and white light observations of a coronal transient Simultaneous radio scattering and white light observations of a coronal transient

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.300..157w&link_type=abstract

Nature, vol. 300, Nov. 11, 1982, p. 157-159.

Computer Science

13

Coronagraphs, Coronal Loops, Radio Scattering, Solar Radio Bursts, Helios 2, Propagation Velocity, Radio Spectra, Shock Fronts, Solar Wind, Spectral Line Width, Sunlight

Scientific paper

Reports that a coronal transient observed by the Solwind coronagraph off the west limb of the sun was also seen in the spectral broadening observations of the Helois-2 2.3 GHz radio signal. These simultaneous data are compared and applied to studies of the shock front. UT difference images show a time difference of up to 2 h between shock and white light occurrences. Helios and Voyager shock speed measurements are consistent, implying that the event observed by Helios is a shock. These coronal transient data show that the shock front is ahead of the white light front, but additional observations of larger events will contribute information to the understanding of coronal transient evolution as they propagate away from the sun.

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