|
TRACE observations of prominences
Edward DeLuca (CfA)
The EUV passbands of TRACE clearly show cool chromospheric material
in absorption in addition to the dramatic hot loops.
In active regions bright (emitting) regions and dark
(absorbing) regions appear to be co-spatial and have similar flow
speeds.
Cross streaming flows are seen in prominences. Estimates of the column
density of the absorbing material can help constrain the energetics of
siphon flows, and the structure and dynamics of prominences.
We will present our analysis of absorption features in an active region
arched filament system and a prominence. Bounds on the column densities
will be given and the limitations and future applications of this
technique
will be discussed.
|