Abstract
Based on their source of origin, high speed streams detected in the solar wind plasma have been classified into two classes, coronal hole and solar flare associated streams. Observed heliospheric plasma and field parameters of these streams such as speed, field strength and its variance have been utilized in a systematic manner in order to see their effects in cosmic ray modulation. It is found that flare associated streams are much more effective in modulation than streams from coronal holes. Inspite of the possibility that solar wind structures during two types of streams might be different, the field variance appears to be the most cricial parameter responsible for this difference in their effectiveness in modulation.
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Badruddin Cosmic ray modulation: Effects of high speed solar wind streams. Astrophys Space Sci 246, 171–191 (1996). https://doi.org/10.1007/BF00645638
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DOI: https://doi.org/10.1007/BF00645638