Propagation of an Earth-Directed Coronal Mass Ejection in 3D

Details Propagation of an Earth-Directed Coronal Mass Ejection in 3D Propagation of an Earth-Directed Coronal Mass Ejection in 3D

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21631405b&link_type=abstract

American Astronomical Society, AAS Meeting #216, #314.05; Bulletin of the American Astronomical Society, Vol. 41, p.894

Astronomy and Astrophysics

Astronomy

Scientific paper

We have developed a new method to reconstruct the 3D evolution of a CME front using the Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) onboard the Solar Terrestrial Relations Observatory (STEREO). On 12 December 2008 an Earth-directed CME was observed by STEREO while the spacecraft were in near quadrature at 86.7 degrees separation. This positioning presents an ideal case for observing its propagation through the combined SECCHI instrument fields-of-view and applying our technique to reconstruct the CME front in 3D. The reconstruction allows us to determine the true CME front kinematics and morphology, and we measure three important dynamic effects at play: deflection from a high latitude source region; an increasing angular width; and interplanetary drag.

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