Fractional variability (Fvar) as a function of the frequency for the 2.3 yr long time range from February 2007 to July 2009. The fractional variability was computed in two different ways: using all the flux measurements from the light curves reported in Fig. 2 (depicted with open markers), and using only those observations simultaneous to the VHE γ-ray measurements from MAGIC (depicted with filled markers). Vertical bars denote 1σ uncertainties and horizontal bars indicate the width of each energy bin.
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.