Abstract
We present MERLIN, VLA and WRST observations of the total intensity and polarization of the radio galaxy 3C159, an extended source, but one whose flux density has been reported to be variable at 408 MHz. We suggest that the low-frequency variability of the source can result from the combined effect of its high linear polarization and ionospheric Faraday rotation during the observations. We also show that the galaxy has a single radio core and a single jet, not two as has previously been suggested. We find that the counter-jet side of the source depolarizes more than the jet side. In this respect the radio galaxy 3C 159 shows similar behavior to that of quasars.
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