Kinetic Properties of CMEs Corrected for the Projection Effect 

ChinTeh Yeh Submitted: 20051229 01:12
Observations of coronal mass ejections (CMEs) with coronagraphs are subject to a projection effect, which results in statistical errors in many properties of CMEs, such as the eruption speed and the angular width. In this paper, we develop a method to obtain the velocity and angular width distributions of CMEs corrected for the projection effect, and then reexamine the relationship between CMEs and the associated flares. We find that (1) the mean eruption speed is 792 km s^{1} and the mean angular width is 59 degree, compared to the values of 549 km s^{1} and 77 degree, respectively before the correction; (2) after the correction, the weak correlation between CME speeds and the GOES Xray peak flux of the flares gets unexpectedly poorer; and (3) before correction, there is a weak correlation between the angular width and the speed of CMEs, whereas the correlation is absent after the correction.
Authors: ChinTeh Yeh, M. D. Ding, and P. F. Chen
Projects: None

Publication Status: Solar Physics, Volume 229, Issue 2, pp.313322
Last Modified: 20051229 01:12




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