Kaczmarek, Jane FPurcell, C RGaensler, B MSun, X. H.O'Sullivan, S PMcClure-Griffiths, Naomi2021-11-302021-11-300035-8711http://hdl.handle.net/1885/252018We present full-polarization, broad-band observations of the radio galaxy NGC 612 (PKS B0131-637) from 1.3 to 3.1 GHz using the Australia Telescope Compact Array. The relatively large angular scale of the radio galaxy makes it a good candidate with which to investigate the polarization mechanisms responsible for the observed Faraday depth structure. By fitting complex polarization models to the polarized spectrum of each pixel, we find that a single polarization component can adequately describe the observed signal for the majority of the radio galaxy. While we cannot definitively rule out internal Faraday rotation, we argue that the bulk of the Faraday rotation is taking place in a thin skin that girts the polarized emission. Using minimum energy estimates, we find an implied total magnetic field strength of 4.2 µG.The Australia Telescope Compact Array is part of the Australia Telescope National Facility that is funded by the Australian Government for operation as a National Facility managed by CSIRO. We thank the staff at the Australia Telescope Compact array for their assistance and support with this project. We also appreciate the invaluable insight offered to us by R. W. Hunstead, R. A. Laing, and L. Rudnick. B.M.G. and C.R.P acknowledge the support of the Australian Research Council through grant no. FL100100114. The Dunlap Institute is funded through an endowment established by the David Dunlap family and the University of Toronto. N.M.M.-G. acknowledges the support of the Australian Research Council through Future Fellowship FT150100024. X.H.S. is supported by the National Natural Science Foundation of China under grant no. 11763008.application/pdfen-AU© 2018 The Author(s)techniques: polarimetricgalaxies: individual: NGC 612galaxies: magnetic fieldsradio continuum: galaxies201810.1093/MNRAS/STY2692020-11-23