The Acceleration of Coronal Mass Ejections in the Low Corona

Details The Acceleration of Coronal Mass Ejections in the Low Corona The Acceleration of Coronal Mass Ejections in the Low Corona

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsh61a0431b&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #SH61A-0431

Physics

7513 Coronal Mass Ejections

Scientific paper

Coronal Mass Ejection (CME) speeds and accelerations have been measured in the low corona, down to 1.12 solar radii, using data from the Mauna Loa MK3 and MKIV telescopes, and out to 30 solar radii, using data from the LASCO telescopes. Most of the CME accelerations occur within the Mauna Loa field of view. The average CME acceleration determined from the MK3 and MKIV data is significantly higher than the average acceleration derived for the same CMEs using the LASCO data only. The Mauna Loa and LASCO data are combined to estimate the rate of change of the acceleration, when possible, and to determine CME start times. The CMEs with the highest accelerations and speeds tend to be associated with erupting active regions and the start times of these highly accelerated CMEs is usually within 3 minutes of the flare onset, which is the time resolution of the Mauna Loa data. These results are consistent with previous studies of CME trajectories.

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