Radio and $\gamma$-ray activity in the jet of the blazar S5 0716$+$714
  We explore the connection between the $\gamma$-ray and radio emission in the
jet of the blazar 0716$+$714 by using 15, 37, and 230 GHz radio and 0.1$-$200
GeV $\gamma$-ray light curves spanning 10.5 years (2008$-$2019). We find
significant positive and negative correlations between radio and $\gamma$-ray
fluxes in different time ranges. The time delays between radio and $\gamma$-ray
emission suggest that the observed $\gamma$-ray flares originated from multiple
regions upstream of the radio core, within a few parsecs from the central
engine. Using time-resolved 43 GHz VLBA maps we identified 14 jet components
moving downstream along the jet. Their apparent speeds range from 6 to 26 $c$,
showing notable variations in their position angles upstream the stationary
component ($\sim$0.53 mas from the core). The brightness temperature declines
as function of distance from the core according to a power-law which becomes
shallower at the location of the stationary component. We also find that the
periods at which significant correlations between radio and $\gamma$-ray
emission occur overlap with the times when the jet was oriented to the north.
Our results indicate that the passage of a propagating disturbance (or shock)
through the radio core and the orientation of the jet might be responsible for
the observed correlation between the radio and $\gamma$-ray variability. We
present a scenario that connects the positive correlation and the unusual
anti-correlation by combining the production of a flare and a dip at
$\gamma$-rays by a strong moving shock at different distances from the jet
apex.
