Abstracts submitted by Joan Burkepile
Coronal Mass Ejection accelerations
J. T. Burkepile [1], O.C. St.Cyr [2], A. L. Stanger [3], L. Sitongia [1], G. deToma [1], H. Gilbert [4]
[1]High Altitude Observatory, National Center for Atmospheric Research; [2]NASA Goddard Space Flight Center; [3]SIDC - Royal Observatory of Belgium; [4]Rice University
In order to understand the nature and magnitude of the forces acting of Coronal Mass Ejections (CMEs), we determine the acceleration of many CMEs over a wide range of scale heights in the corona using observations from the Mauna Loa Solar Observatory, the LASCO coronagraphs onboard SOHO and the SECCHI COR1 coronagraphs onboard STEREO. We examine the acceleration as a function of height and find that the largest accelerations occur low in the corona (< 3 solar radii). In addition, we find that low coronal measurements are needed to determine the most accurate CME onset times. Accurate onset times are critical for understanding the relationship between CMEs and other associated forms of solar activity. |
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