Free Access
Fig. 14
Same as Fig. 4, but for He iλ4713. The full profiles are displayed in Fig. 13. We note that in 2012 and 2013 the total power has no peaks above the noise level. The two NRP frequencies reported by de Jong et al. (1999) are marked by horizontal tickmarks.
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.