|The contours of this image show the giant
radio galaxy B0511-305 as imaged by the Compact Array at 2.1 GHz. The lobes
of this radio galaxy extend well over 1 Mpc, making this object a true giant
of the Universe. Galaxies with recession velocities within 900 km/s of the
host galaxy (redshift z=0.0577) are shown as blue crosses; foreground
galaxies are marked with blue triangles and background galaxies with magenta
dots. The redshifts are from the AAOmega spectrograph on the Anglo-Australian
Telescope. The observations are part of a study of the interaction between
the lobes of 19 giant radio galaxies and the Warm-Hot Intergalactic Medium
(WHIM). The results indicate that giant radio lobes are preferentially found
to propagate towards regions of lower galaxy density. For more details, see
Malarecki et al.
(2013) and Malarecki et al. (2015).