Evidence linking coronal mass ejections with interplanetary magnetic clouds

Details Evidence linking coronal mass ejections with interplanetary magnetic clouds Evidence linking coronal mass ejections with interplanetary magnetic clouds

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983stin...8418141w&link_type=abstract

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Physics

Interplanetary Magnetic Fields, Magnetic Clouds, Stellar Coronas, Stellar Mass Ejection, Plasma Clouds, Radio Bursts, Shock Waves

Scientific paper

Using proxy data for the occurrence of those mass ejections from the solar corona which are directed earthward, we investigate the association between the post-1970 interplanetary magnetic clouds of Klein and Burlaga and coronal mass ejections. The evidence linking magnetic clouds following shocks with coronal mass ejections is striking; six of nine clouds observed at Earth were preceded an appropriate time earlier by meter-wave type II radio bursts indicative of coronal shock waves and coronal mass ejections occurring near central meridian. During the selected periods when no clouds were detected near Earth, the only type II bursts reported were associated with solar activity near the limbs. Where the proxy solar data to be sought are not so clearly suggested, that is, for clouds preceding interaction regions and clouds within cold magnetic enhancements, the evidence linking the clouds and coronal mass ejections is not as clear; proxy data usually suggest many candidate mass-ejection events for each cloud. Overall, the data are consistent with and support the hypothesis suggested by Klein and Burlaga that magnetic clouds observed with spacecraft at 1 AU are manifestations of solar coronal mass ejection transients.

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