Physics
Scientific paper
Jul 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aipc..382...80a&link_type=abstract
Proceedings of the eigth international solar wind conference: Solar wind eight. AIP Conference Proceedings, Volume 382, pp. 80-
Physics
Particle Emission, Solar Wind, Solar Electromagnetic Emission, X-Ray
Scientific paper
The polar crown event of 1994 April 14 is one of the largest scale eruptive events observed by the Yohkoh/SXT. Associated with the formation of an arcade of soft X-ray loops at the Sun was the detection of an interplanetary forward/reverse shock event by the Ulysses spacecraft some 7 days later. The relationship between the coronal and interplanetary signatures of these events is important if we are to address fully the initialisation and consequent development of interplanetary phenomena, such as CMEs and counter-streaming electrons, originating at the Sun. We investigate the development of the energetics of the 1994 April 14 event and their relationship to the dynamics of the eruption are investigated. The arcade formation, together with the eruption of material into interplanetary space, suggests a large-scale temporary reconfiguration of the coronal magnetic field. We examine the effects of the formation of such a coronal arcade structure on the HCS and discuss the dynamics involved with the passage of a large scale disturbance through the interplanetary magnetic field.
Alexander David
Harvey Karen L.
Hoeksema Jon Todd
Hudson Hugh S.
Zhao Xiaopeng
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