Computer Science
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010eguga..12.1088s&link_type=abstract
EGU General Assembly 2010, held 2-7 May, 2010 in Vienna, Austria, p.1088
Computer Science
Scientific paper
We present observational evidence of the near-Sun distortion of a coronal mass ejection (CME) by the ambient solar wind into a concave-outward structure. On November 14 2007, a CME was observed by coronagraphs onboard the STEREO-B spacecraft, possessing a circular cross-section. Subsequently the CME passed through the field of view of the STEREO-B Heliospheric Imagers where it was observed to distort into an increasingly concave-outward structure. The CME observations are compared to an analytical flux rope model constrained by a MHD solar wind solution. The resultant bimodal speed profile is used to kinematically distort a circular structure that replicates the initial topology of the CME. The CME topology is found to change rapidly over a relatively short distance. This indicates an approximate radial distance in the heliosphere where the solar wind forces begin to dominate over the magnetic forces of the CME influencing the topology of the CME.
Davies Jackie A.
Forsyth Robert J.
Owens Mathew J.
Rouillard Alexis P.
Savani Neel P.
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