The connection between the parsec-scale radio jet and gamma-ray flares
  in the blazar 1156+295
  The blazar 1156+295 was active at gamma-ray energies, exhibiting three
prominent flares during the year 2010. Here, we present results using the
combination of broadband (X-ray through mm single dish) monitoring data and
radio band imaging data at 43 GHz on the connection of gamma-ray events to the
ejections of superluminal components and other changes in the jet of 1156+295.
The kinematics of the jet over the interval 2007.0-2012.5 using 43 GHz Very
Long Baseline Array observations, reveal the presence of four moving and one
stationary component in the inner region of the blazar jet. The propagation of
the third and fourth components in the jet corresponds closely in time to the
active phase of the source in gamma rays. We briefly discuss the implications
of the structural changes in the jet for the mechanism of gamma-ray production
during bright flares. To localise the gamma-ray emission site in the blazar, we
performed the correlation analysis between the 43 GHz radio core and the
gamma-ray light curve. The time lag obtained from the correlation constrains
the gamma-ray emitting region in the parsec-scale jet.
