The automatic detection and tracking of interplanetary coronal mass ejections (CMEs) using heliospheric imager data

Details The automatic detection and tracking of interplanetary coronal mass ejections (CMEs) using heliospheric imager data The automatic detection and tracking of interplanetary coronal mass ejections (CMEs) using heliospheric imager data

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh41a1772t&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH41A-1772

Astronomy and Astrophysics

Astrophysics

[2101] Interplanetary Physics / Coronal Mass Ejections, [7513] Solar Physics, Astrophysics, And Astronomy / Coronal Mass Ejections

Scientific paper

We have developed a program that will, when given image data from the Solar Mass Ejection Imager (SMEI) onboard Coriolis, automatically detect coronal mass ejections (CMEs) in the images and measure their leading edges. It will also determine whether the leading edges found are part of the same CME, or different CMEs. Feeding these leading edges into the Tappin-Howard Model (Tappin and Howard, 2009) gives us a prediction of the kinematic trajectory of the CMEs concerned, estimates their 3-D structure and direction and, in Earth-directed cases, their arrival times at the Earth. We thus have a fully autonomous means to identify, reconstruct, and forecast CMEs using heliospheric imager data alone. We will demonstrate how these leading edges are picked out, and estimate how many events are 'missed' by our program (and likewise, how many 'false positives' are found). We will also compare the predicted arrival time of an Earth-directed CME with the actual time that it arrived at the Earth.

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