Free Access

Fig. 1


Synoptic maps of the Ca K-line intensity (upper panel), unsigned (middle), and signed (lower panel) magnetic flux for CR1708. In the magnetogram (lower panel) the black and white halftones correspond to magnetic fields with negative and positive polarity. The Ca K-line observations are taken from the MWO, the magnetic field data from the NSO/KP. Two arrows point to dark circular voids (corresponding to sunspot umbrae) in the middle of bright plages. Panel c) is scaled between ±100 G (see scale on the right side of the panel).

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.