Radial Speed for Slow CMEs
Abstract
Coronal Mass Ejections CMEs have been registered since 1996 with The Solar and Heliospheric observatory SoHO The diversity and sensitivity of the instruments in SoHO have provided huge quantity of data for CMEs and related phenomena Dynamical parameters of CMEs are evaluated and published in the SoHO LASCO CME Catalogue A broad range of values for the plane of the sky speed of CMEs results from these observations in particular extremely slow events seem to be possible sim 40 km s In this work we analyzed slow CMEs speed 400 km s for events during 2003 and 2004 using the expansion speed to determine the radial speed We evaluated the projection effects on the determination of speed and acceleration for these events The possible relation of these CMEs to flares and prominences is studied as well in order to present a wide panorama for slow CMEs
- Publication:
-
36th COSPAR Scientific Assembly
- Pub Date:
- 2006
- Bibcode:
- 2006cosp...36.3369M