Download original image
CMEs are multi-thermal with their primary features appearing in either hot or cool lines. Top panel: A hot CME is bright in the 335 Å (Fe xvi; ~3 MK), 94 Å (Fe xviii; ~6 MK), and 131 Å (Fe xxi; >10 MK) channels, but nearly invisible in the cooler lines (Reeves & Golub, 2011). Bottom panel: A cool CME is seen clearly in the 304 Å (He ii; ~50,000 K) channel and in 171 Å (Fe ix; ~0.6 MK), but only in absorption in Fe xii–xvi (~1–3 MK). In the 131 Å channel, the CME is visible due to emission from Fe viii (Su et al., 2015). Observations must detect plasma over this wide range of temperatures and be able to separate the components spatially.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.