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Paper: VLBA Polarimetry: A Faraday Screen in 3C273
Volume: 340, Future Directions in High Resolution Astronomy: The 10th Anniversary of the VLBA
Page: 195
Authors: Ojha, R.; Homan, D.C.; Wardle, J.F.C.; Roberts, D.H.; Aller, H.D.; Aler, M.F.; Hughes, P.A.
Abstract: The polarization of superluminal radio components moving at the base of the VLBI jet in 3C273 are tracked as part of a six epoch monitoring campaign at 15 and 22 GHz. The components rise sharply in fractional polarization as they move outward, suggesting either (1) an increase in intrinsic B-field order or (2) an emergence from behind a Faraday depolarizing screen. We prefer the second possibility and discuss a model that provides depolarization with little observable Faraday rotation.
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