Spectropolarimetric monitoring of active galaxy 3C390.3 with 6m
  telescope SAO RAS in the period 2009-2014
  Here we present the spectropolarimetric observations of the radio loud active
galaxy 3C 390.3 in the period 2009-2014 (24 epochs). The galaxy has been
observed with the 6-meter telescope of SAO RAS using the SCORPIO
spectropolarimeter. We explore the variability and lags in the polarized light
of the continuum and broad H$\alpha$ line. We give the Stokes parameters $Q,
U$, degree of linear polarization $P$ and the position angle of the
polarization plane, $\varphi$, for 24 epochs.
  We find a small lag~(10-40 days) between the unpolarized and polarized
continuum that is significantly smaller than the estimated lags for the
unpolarized broad emission lines (lag(H$\alpha$)$\sim$138-186 and
lag(H$\beta$)$\sim$60-79 days). This shows that the region of the variable
polarized continuum is significantly smaller than the broad line region,
indicating that a part of the polarized continuum is coming from the jet. The
lag of the polarized light in the H$\alpha$ line (89-156 days) indicates an
additional component to the disc one that has an outflowing velocity of
$\sim$-1200 km s$^{-1}$. This region seems to depolarize the polarized broad
H$\alpha$ line emitted from the disc and scattered in the inner part of the
torus.
