Other
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sh22b05a&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SH22B-05
Other
7509 Corona, 7513 Coronal Mass Ejections, 7519 Flares, 7554 X Rays, Gamma Rays, And Neutrinos
Scientific paper
In many cases, coronal mass ejections exhibit a strong counterpart in the X-ray corona, particularly in flare-related events. Observations by the Soft X-ray Telescope on Yohkoh have exhibited a number of manifestations in association with CME eruptions. These include the well-known dimming events, post-event arcades and expanding loop systems. We examine the X-ray signatures of a number of fast and slow halo CME events for evidence of two-classes of CME eruption in accord with the observed velocity profiles determined from white-light data. Flare-associated CMEs, which have a tendency to exhibit constant velocity, necessarily undergo a rapid acceleration in the low corona and should exhibit enhanced heating of the ambient corona to X-ray emitting temperatures. Slow CMEs, on the other hand, are expected to display a more subtle, if any, effect in the hot corona. We examine the Yohkoh database for evidence of a dichotomy in the X-ray signatures of halo CMEs.
Alexander Dave
Metcalf Thomas R.
Nitta Nariaki
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