Discovery of a suspected giant radio galaxy with the KAT-7 array
  We detect a new suspected giant radio galaxy (GRG) discovered by KAT-7. The
GRG core is identified with the WISE source J013313.50-130330.5, an
extragalactic source based on its infrared colors and consistent with a
misaligned AGN-type spectrum at $z\approx 0.3$. The multi-$\nu$ spectral energy
distribution (SED) of the object associated to the GRG core shows a synchrotron
peak at $\nu \approx 10^{14}$ Hz consistent with the SED of a radio galaxy
blazar-like core. The angular size of the lobes are $\sim 4 ^{\prime}$ for the
NW lobe and $\sim 1.2 ^{\prime}$ for the SE lobe, corresponding to projected
linear distances of $\sim 1078$ kpc and $\sim 324$ kpc, respectively. The
best-fit parameters for the SED of the GRG core and the value of jet boosting
parameter $\delta =2$, indicate that the GRG jet has maximum inclination
$\theta \approx 30$ deg with respect to the line of sight, a value obtained for
$\delta=\Gamma$, while the minimum value of $\theta$ is not constrained due to
the degeneracy existing with the value of Lorentz factor $\Gamma$. Given the
photometric redshift $z \approx 0.3$, this GRG shows a core luminosity of
$P_{1.4 GHz} \approx 5.52 \times 10^{24}$ W Hz$^{-1}$, and a luminosity $P_{1.4
GHz} \approx 1.29 \times 10^{25}$ W Hz$^{-1}$ for the NW lobe and $P_{1.4 GHz}
\approx 0.46 \times 10^{25}$ W Hz$^{-1}$ for the SE lobe, consistent with the
typical GRG luminosities. The radio lobes show a fractional linear polarization
$\approx 9 \%$ consistent with typical values found in other GRG lobes.
