Publication details
Motions and Structures in an Active Prominence on September 18, 1995
| Authors | |
|---|---|
| Year of publication | 1999 |
| Type | Article in Proceedings |
| Conference | Motions in the Solar Atmosphere, Proceedings of the Summerschool and Workshop held at the Solar Observatory Kanzelhöhe, Kärnten, Austria, September 1-12, 1997, |
| MU Faculty or unit | |
| Citation | |
| Field | Astronomy and astrophysics |
| Keywords | sun; prominence |
| Description | Halpha spectra and filtergrams of the eruptive prominence observed with a high temporal resolution on September 18, 1995 were analysed to reconstruct motions and structures. A numerical code for the interpretation of patterns in solar spectra inclined due to rotation was developed. A special attention was payed to particularities in the spectrum before and during the active phase of the prominence when a slow rotation on the spatial scale of more than 50 000 km started. The linear velocities measured during this large scale rotation reached values of the order about 50 km/s. Then, during this slow rotation, instabilities in the plasma began and resulted in a very dynamic restructuralisation and disappearance of the prominence. |