Radio galaxies and magnetic fields in A514

A514 contains six extended and polarized radio sources located at various p rojected distances from the cluster center. Here we present a detailed stud y of these six radio sources in total intensity and polarization using the Very Large Array at 3.6 and 6 cm. Since the radio sources sample different lines of sight across the cluster, an analysis of the Faraday Rotation Meas ures (RMs) provides information on the strength and the structure of the cl uster magnetic field. These sources show a decreasing Faraday Rotation Meas ure with increasing distance from the cluster center. We estimate the stren gth of the magnetic field to be similar to3-7 muG in the cluster center. Fr om the RM structure across the stronger and more extended sources we estima te the coherence length of the magnetic field to be about 9 kpc at the clus ter center.