3-D velocities of a whole filament channel obtained by imaging and spectroscopic observations of IRIS
Abstract
The dynamics of a filament channel are of great importance to understand its formation and evolution. In this work, we try to make the best use of IRIS’s imaging and spectroscopic observations at the same time. With IRIS’s high spatial resolutions, we can clearly see that material in the filament channel moves in two opposite directions in the form of streams. It implies that counter-streamings may also be caused by siphon flows, as well as the common ways of thread longitudinal oscillations. Furthermore, the 3-D velocities of the whole filament channel are able to provide its exact information of magnetic configurations, which are mainly relied on magnetic extrapolation before.
- Publication:
-
AAS/Solar Physics Division Abstracts #48
- Pub Date:
- August 2017
- Bibcode:
- 2017SPD....4810504W