 |
| Titel |
Estimation of true speed and direction of propagation of CMEs using SECCHI/STEREO observations |
| VerfasserIn |
N. Srivastava, A. D. Joshi, M. Mierla |
| Konferenz |
EGU General Assembly 2009
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250019280
|
|
|
|
|
|
| Zusammenfassung |
| We have reconstructed the leading edge of coronal mass ejections (CMEs) observed by COR1 and COR2 coronagraphs aboard SECCHI/STEREO spacecraft. The reconstruction of the leading edge of the CMEs is achieved using tie-pointing method based on epipolar geometry. The true speeds have been estimated from the reconstruction of the leading edge. These estimated true speeds are then compared with the projected plane-of-sky speeds of the leading edge of the CME derived from LASCO aboard SoHO as well as from STEREO A and B images individually. The results show that a better estimation of the true speed of the CME in the Sun-Earth direction is achieved from the 3-D reconstruction. We also discuss the implication of these estimated true speeds on space weather prediction. |
|
|
|
|
|