Physics
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985soph...98..341b&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 98, Aug. 1985, p. 341-368.
Physics
23
Solar Corona, Solar Magnetic Field, Stellar Mass Ejection, Coronagraphs, Faraday Effect, Helios 1, Helios 2, Solar Radio Bursts
Scientific paper
A concerted search for coronal transients was conducted with the 'Solwind' coronagraph during the solar occultations of the two Helios spacecraft in October/November 1979. The polarization angle and bandwidth of the linearly polarized S-band downlink signal were monitored at the three 64-m tracking stations of the NASA Deep Space Network to determine coronal Faraday rotation and spectral broadening. A one-to-one correspondence could be established between abrupt disturbances in the two signal parameters and the passage of a white-light transient through the signal ray path from spacecraft to earth. The white-light morphology and the additional information provided by the radio sounding coverage are presented for each of the five distinct events recorded. Although no specific example could be observed in sufficient detail in both white light and Faraday rotation to derive the small-scale magnetic structure, some qualitative descriptions of the orientation and rough estimates of the magnitude of the transient magnetic field could be made.
Amstrong J. W.
Bird Michael K.
Howard Russ A.
Koomen Martin J.
Michels Donald J.
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