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Appendix
Data reduction and imaging of the radio
galaxies 0206+35, 0755+37 and M 84 ‡
The aim of this appendix is to present the VLA data reduction and high-quality radio
imaging of the FR I sources 0206+35, 0755+37 and M 84, which have been performed
in collaboration with R. A. Laing, A. H Bridle, P.Parma and M.Bondi.
Here, we describe:
1. details of the observations and data reduction
2. the source morphologies in total intensity at a range of resolutions,
3. images of the degree of polarization and the apparent magnetic field direction, corrected for
Faraday rotation.
.1 Observations and VLA data reduction
We made use of new and archive VLA observations. Deep images with angular resolution
ranging from 4.5 down to 0.35 arcsec FWHM have been produced from multi-configuration VLA
observations at 1.4 GHz (L-band) and 4.9 GHz (C-band). A journal of the observations is given in
Table 5.
The VLA data listed in Table 5 were calibrated and imaged using the AIPS software package,
following standard procedures, with a few additions. The flux-density scale was set using
observations of 3C 286 or 3C 48 and the zero-point of E-vector position angle was determined
‡ part of Laing, Guidetti et al. 2011, in prep.
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