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A Quick Method for Estimating the Propagation Direction of Coronal Mass Ejections Using STEREO-COR1 Images |
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| Authors: | M Mierla J Davila W Thompson B Inhester N Srivastava M Kramar O C St Cyr G Stenborg R A Howard |
| Institution: | (1) Institute for Astronomy, University of Hawaii-Manoa, 2680 Woodlawn Dr., Honolulu, HI 96822, USA;(2) Code 7663, Naval Research Laboratory, Washington, DC 20375, USA;(3) Sefydliad Mathemateg a Ffiseg, Prifysgol Aberystwyth, Ceredigion, SY23 3BZ Cymru, UK |
| Abstract: | We describe here a method to obtain the position of a coronal moving feature in a three-dimensional coordinate system based on height – time measurements applied to STEREO data. By using the height – time diagrams from the two SECCHI-COR1 coronagraphs onboard STEREO, one can easily determine the direction of propagation of a coronal mass ejection (i.e., if the moving plasma is oriented toward or away from the Earth). This method may prove to be a useful tool for space weather forecasting by easily identifying the direction of propagation as well as the real speed of the coronal mass ejections. |
| Keywords: | Corona: structures Coronal mass ejections: initiation and propagation |
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