Free Access

Fig. 4.


Bisector analysis of the Ti I 5713.9 Å line profiles shown in Fig. 3. The bisector curves for the quiet Sun (blue curve) and for the sunspot umbra (red curve) are displayed at the absolute wavelength scale and in Doppler velocity. The normalized intensities are given at two different y-axis scales to allow a better visual comparison.

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.