Are interplanetary magnetic clouds manifestations of coronal transients at 1 AU?

Details Are interplanetary magnetic clouds manifestations of coronal transients at 1 AU? Are interplanetary magnetic clouds manifestations of coronal transients at 1 AU?

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984soph...91..169w&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 91, March 1984, p. 169-180.

Physics

63

Interplanetary Magnetic Fields, Magnetic Clouds, Magnetic Field Configurations, Plasma Clouds, Shock Wave Propagation, Solar Corona, Stellar Mass Ejection, Solar Activity Effects, Solar Cycles, Type 2 Bursts

Scientific paper

Using proxy data for the occurrence of those mass ejections from the solar corona which are directed earthward, the association between the post-1970 interplanetary magnetic clouds of Klein and Burlaga (1982) and coronal mass ejections is investigated. 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 control 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.

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