Open Access

Fig. 1


Download original image

Top: continuum image with sunspots (a), and magnetogram with active regions (b), both registered at the same time (6:00 AM) on 9 November 2011 by HMI/SDO. Bottom: results of running the workflow initial step on the images shown at the top, with umbra and penumbra regions (c) and active regions with different dimensions (d) identified.

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.