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| Paper: |
On the Visibility of Solar Prominences in SDO/AIA Channels |
| Volume: |
456, The Fifth Hinode Science Meeting |
| Page: |
75 |
| Authors: |
Heinzel, P.; Schmieder, B.; Parenti, S.; Golub, L. |
| Abstract: |
Prominences in EUV lines are observed as dark structures over the
limb due absorption and emission blocking mechanisms. However, at
171 Å is observed emission in prominences with TRACE and
SDO/AIA, and it is believed to be due to the prominence-corona
transition region (PCTR) emitting in cool lines. To check this, we
use the Differential Emission Measure (DEM) recently obtained for
quiescent prominences using SOHO/SUMER spectra (Parenti and Vial
2007) and compute the synthetic spectra in selected AIA channels.
We then compare 171 Å and 195 Å channels and derive
conclusions concerning the PCTR emissivity, as well well as the
absorption and blocking. The emission seen in the 171 Å channel
can be used to better constrain prominence DEM curves. |
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