Automatic CME Detection from Coronagraph Image Pairs

Details Automatic CME Detection from Coronagraph Image Pairs Automatic CME Detection from Coronagraph Image Pairs

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsh14a..01l&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SH14A-01

Physics

7509 Corona, 7513 Coronal Mass Ejections (2101), 7594 Instruments And Techniques

Scientific paper

We have developed a technique for the automatic detection of coronal mass ejections using two sequential coronagraph images. The technique is based on tracking arc-like features from one image to the next; the feature's velocity is also determined. The method has been developed and tested using LASCO C2 and C3 data. The goal of this work is to develop an automatic CME detection algorithm that can be used on board the STEREO spacecraft to preferentially downlink data containing CMEs from an onboard "rotating" data buffer. Results for this detection technique compare very favorably with CMEs identified in the LASCO CME catalog (http://cdaw.gsfc.nasa.gov/CME_list/). For the periods when results were compared, no time periods with significant CMEs were missed using the automatic technique.

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