Model fitting of the kinematics for knot k: trajectory Zn-Xn, core separation rn(t), coordinates XN(t) and Zn(t), the modeled apparent velocity/viewing angle and Lorentz/Doppler factor. In each of the upper plots, two additional model curves (red and green) are also shown for ejection epochs t0 + 0.3 yr and t0−0.3 yr (t0 = 2010.88), demonstrating that most of the observational data points are within the regions confined by the two curves and that the precession period is determined with an uncertainty of ~0.3 yr.
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.