Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spd....37.1101h&link_type=abstract
American Astronomical Society, SPD meeting #37, #11.01; Bulletin of the American Astronomical Society, Vol. 38, p.238
Astronomy and Astrophysics
Astronomy
Scientific paper
The Solar Mass Ejection Imager (SMEI) remains the only instrument to date capable of imaging interplanetary coronal mass ejections (ICMEs) at distances beyond 90 Rs. In operation for over 3 years, SMEI has successfully detected and tracked over 200 transients. The SMEI team's ongoing efforts towards data refinement and noise reduction offer an opportunity to investigate properties of ICMEs which have been previously inaccessible.We present the results from two transients that were observed by both the LASCO coronagraphs and SMEI, in February 2003 and February 2004. The evolution of each transient into the interplanetary medium is investigated by comparing the morphology of each using observations from EIT, LASCO and SMEI, as well as their distance, speed and acceleration development.Finally, we compare the results with those predicted from two commonly acknowledged models of CME evolution, i.e. the snowplow and aerodynamic drag models.
Howard Timothy A.
Johnston Janet C.
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