On the Visibility of Solar Prominences in SDO/AIA Channels

0386693 - ASÚ 2013 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Heinzel, Petr - Schmieder, B. - Parenti, S. - Golub, L.
On the Visibility of Solar Prominences in SDO/AIA Channels.
The Fifth Hinode Science Meeting: Exploring the active Sun. San Francisco: Astronomical Society otf the Pacific, 2012 - (Golub, L.), s. 75-76. ASP Conference Series, 456. ISBN 9781583817940.
[Hinode Science Meeting /5./. Cambridge (US), 10.10.2011-14.10. 2011]
Institucionální podpora: RVO:67985815
Klíčová slova: prominences * EUV
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika

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.
Trvalý link: http://hdl.handle.net/11104/0216001