Yohkoh/SXT soft x-ray observations of sudden mass loss from the solar corona

Details Yohkoh/SXT soft x-ray observations of sudden mass loss from the solar corona Yohkoh/SXT soft x-ray observations of sudden mass loss from the solar corona

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aipc..382...88h&link_type=abstract

Proceedings of the eigth international solar wind conference: Solar wind eight. AIP Conference Proceedings, Volume 382, pp. 88-

Physics

3

Particle Emission, Solar Wind, Solar Electromagnetic Emission, X-Ray

Scientific paper

With soft X-ray imaging we can study the entire coronal volume, except for cold inclusions such as prominences, as a function of time. This should allow us to observe the origins of coronal mass ejections. We report here an initial survey of the Yohkoh/SXT observations at the times of reported or apparent mass ejections: three LDE flare events and two large-scale arcade formations. For each of the events we can easily detect sudden coronal dimming, which we interpret as the launch interval of a CME. In one of the flare events we have found a well-defined plasma cloud, apparently formed from a set of loop structures, which rises and disappears during the growth phase of the flare emission. Its mass amounted to some 4×1014 g with a density of 3×108 cm-3 and a temperature of 2.8 MK before its disappearance.

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