Journal Article

Kinetic properties of coronal mass ejections corrected for the projection effect in Cycle 23

Peng-Xin Gao, Ke-Jun Li and Qi-Xiu Li

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 394, issue 2, pages 1031-1036
Published in print April 2009 | ISSN: 0035-8711
Published online March 2009 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2009.14390.x
Kinetic properties of coronal mass ejections corrected for the projection effect in Cycle 23

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Using Howard et al.'s method, we investigate, before and after the projection correction, the speed and acceleration distributions for 1747 coronal mass ejections (CMEs) associated solely with flares (FL CMEs) and 631 CMEs associated solely with filament eruptions (FE CMEs) observed by the Large Angle and Spectrometric Coronagraph on board the Solar and Heliographic Observatory (SOHO/LASCO) from 1996 September to 2007 September, corresponding to almost an entire solar cycle. The results show the following. (1) Before the correction, the speed distributions for FL and FE CMEs are statistically different from each other; after the correction, the speed distributions for FL and FE CMEs should also be statistically different from each other. (2) Before the correction, the acceleration distributions for FL and FE CMEs are statistically different from each other. However, after the correction, FL and FE CMEs should have quite similar acceleration distributions.

Keywords: Sun: coronal mass ejections; Sun: filaments; Sun: flares

Journal Article.  4237 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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