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Date and Time of the Query: 2019-06-17 T19:38:29 PDT
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For refcode 1995A&A...299..671D:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1995A&A...299..671D 5 GHz VLBI polarization of 3C 138 D. Dallacasa, W.D. Cotton, C. Fanti, R. Fanti, A.R. Foley, R.T. Schilizzi, and R.E. Spencer Dipartimento di Astronomia, Via Zamboni 33, I-40216 Bologna, Italy. Istituto di Radioastronomia - CNR, via Gobetti 101,I-40129 Bologna, Italy Joint Institute for VLBI in Europe, Postbus 2, NL-7990 AA Dwingeloo, The Netherlands National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903-2475, USA Dipartimento di Fisica, via Irnerio 46, I-40126 Bologna, Italy Netherlands Foundation for Research in Astronomy, Postbus 2, NL-7990 AA Dwingeloo, The Netherlands Sterrenwacht Leiden, Postbus 9513, NL-2300 RA Leiden, The Netherlands NRAL-Jodrell Bank, University of Manchester, Macclesfield Cheshire, SKI1 9DL, UK Received 5 October 1994/Accepted 9 January 1995 Abstract Polarization sensitive VLBI images at 5 GHz are presented for the Compact Steep-Spectrum radio quasar 3C 138. The polarized emission is dominated by the main jet, ~1 kpc in length; the core instead is weakly polarized, if at all, at this frequency. The magnetic field geometry on scales of 10 mas is mostly longitudinal, with evidence of sub-structures at the end of the jet, where the interaction with the ambient medium is most pronounced; the orientation of the ordered component of the magnetic field becomes roughly tangential at the end of the jet. The overall polarization features seem to be similar both to the pc-scale radio jets of flat spectrum, core dominated quasars, and to the kpc-scale jets seen in extended, lobe dominated powerful FRII radio sources. Key words: polarization - galaxies: jets - galaxies: nuclei - galaxies: quasars: individual: 3C 138-radio continuum: galaxies
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