Physics
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....9.3531c&link_type=abstract
Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int
Physics
4
Scientific paper
A characteristic feature of most interplanetary coronal mass ejections (ICMEs) is the presence of bi-directional flows of solar wind electron heat-fluxes. These flows indicate that the magnetic field lines within ICMEs are connected to the Sun at both ends. However, the bi-directional electron flows are frequently observed to be intermittent. It has been suggested that this occurs when field lines inside the ICME reconnect with open field lines of the normal solar wind. Occasionally the heat-flux is entirely absent, indicating a completely open structure. In either case this means that there are open field lines within the ICME along which cosmic rays may gain easy access. We examine cosmic ray intensities inside several ICMEs at 1 AU which have extended periods of unidirectional heat-flux or complete heat- flux `dropouts' and consider whether there is any evidence that the intensities are related to the characteristics of the heat-fluxes and hence to the field line configuration.
Cane Hilary V.
Dvornikov V. M.
Richardson Ian G.
Sdobnov V. E.
Wibberenz Gerd
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