Using the morphology and magnetic fields of tailed radio galaxies as
  environmental probes
  Bent-tailed (BT) radio sources have long been known to trace over densities
in the Universe up to z ~ 1 and there is increasing evidence this association
persists out to redshifts of 2. The morphology of the jets in BT galaxies is
primarily a function of the environment that they have resided in and so BTs
provide invaluable clues as to their local conditions. Thus, not only can
samples of BT galaxies be used as signposts of large-scale structure, but are
also valuable for obtaining a statistical measurement of properties of the
intra-cluster medium including the presence of cluster accretion shocks &
winds, and as historical anemometers, preserving the dynamical history of their
surroundings in their jets. We discuss the use of BTs to unveil large-scale
structure and provide an example in which a BT was used to unlock the dynamical
history of its host cluster. In addition to their use as density and dynamical
indicators, BTs are useful probes of the magnetic field on their environment on
scales which are inaccessible to other methods. Here we discuss a novel way in
which a particular sub-class of BTs, the so-called `corkscrew' galaxies might
further elucidate the coherence lengths of the magnetic fields in their
vicinity. Given that BTs are estimated to make up a large population in next
generation surveys we posit that the use of jets in this way could provide a
unique source of environmental information for clusters and groups up to z = 2.
