Publication Date:
2019-10-22
Description:
A fundamental limitation of current EUV diagnostic techniques is the need to neglect the He II emission contribution in the 304 channel. This limits our ability to use strong observations available to us and increases uncertainties in the measurements made. A new EUV diagnostic technique is introduced that accounts for absorption as well as emission contributions from emitting channels such as 304 . This new technique can be equally applied to emitting and non-emitting channels, paving the way for more realistic discussion of the heating and energetics of transient plasmas using a wider range of observations. The diagnostic technique is used to compute the dynamics and energetics of a filament eruption observed in the high-cadence SDO/AIA and the associated ICME is observed by ACE/SWICS. The analysis gives us robust measurements of filament dynamics, energetics and its ionization history in the low solar corona. A comparison of these results with results calculated with techniques where He II emission in 304 is not considered allowed us to quantify the contribution from emission and comment on the robustness of our method.
Keywords:
Earth Resources and Remote Sensing; Optics
Type:
ARC-E-DAA-TN64906
,
American Geophysical Union (AGU) Fall Meeting 2018; Dec 10, 2018 - Dec 14, 2018; Washington, DC; United States
Format:
application/pdf
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