Astronomy and Astrophysics – Astronomy
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21640616h&link_type=abstract
American Astronomical Society, AAS Meeting #216, #406.16; Bulletin of the American Astronomical Society, Vol. 41, p.882
Astronomy and Astrophysics
Astronomy
Scientific paper
The recent emergence of heliospheric imagers (SMEI (2003), HI (2006)) has enabled for the first time the tracking of coronal mass ejections (CMEs) constantly across large distances, to 1 AU and beyond. This allows not only a study of the evolutionary nature of CMEs through the inner heliosphere, but also the extraction of additional three-dimensional (3-D) information that is not available in coronagraphs. This is because the linearity imposed on white light coronagraph images breaks down across large distances, allowing, with careful analysis of geometry and Thomson scattering, the extraction of 3-D structural and kinematic properties of CMEs. Additional scientific information is therefore available through heliospheric imagers. We present scientific results using such analysis on an Earth-directed event observed in November 2007. Our 3-D reconstruction analysis reveals that the event is a combination of a CME with a corotating interaction region (CIR), and we offer suggestions as to how this combined structure arose.
DeForest Craig
Howard Timothy A.
Tappin James
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