I will describe new low-frequency observations of the
Perseus cluster using the WSRT at frequencies of 1400 and
350 MHz. In polarized intensity we see faint
large scale structures reminiscent of relics or buoyant bubbles.
They are almost certainly associated with the cluster.
Thomson scattering is a possible contributor to the polarized
emission from the central part of the cluster.
In the outer part the structures are most likely associated
with cluster formation shocks and LSS. There the polarization is
probably due to the synchrotron mechanism. Very high percentages
polarization indicate large uniform fields.
The very faint polarized structures have been made visible as a
result of a novel technique called RM-synthesis which allows imaging
well below te confusion limit. I will als briefly describe
some new 21cm line absorption results against 3C84 in the
centre of the cluster.