Forward Modeling of CMEs Using LASCO Data and for the STEREO Mission
Abstract
The future STEREO mission, due to launch in early 2006, will have two twin satellites that will observe the Sun and its corona from two different points of view. The main goal of the mission is to understand how the CMEs are initiated and how they evolve during time. Using the two points of view will permit a reconstruction of the electron density and morphology of coronal structures such as CMEs. Two approaches are possible to reach that goal: an inversion technique, assuming no or little a priori assumptions of the structure, and a forward modeling technique, for which a morphology and location of the studied structure is assumed. In this poster we present a forward modeling method used to determined the electron density of different CMEs from SOHO-LASCO data. We used the graduated cylindrical shell (GCS) model, an empirical simulation of a flux-rope CME. We used time sequences and assumption of self similarity to have many views of the same CME for a best fit. We used also minimization techniques to find the best fit of the different model parameters.
- Publication:
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AGU Spring Meeting Abstracts
- Pub Date:
- May 2005
- Bibcode:
- 2005AGUSMSH52A..05T
- Keywords:
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- 7509 Corona;
- 7513 Coronal mass ejections;
- 7594 Instruments and techniques;
- 7843 Numerical simulation studies