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Magnetic Fields in Quasar 3C147 on Milliarcsecond Scales

  • H. Y. Zhang
  • R. D. Nan
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Abstract

VLBA polarimetric observations of the steep-spectrum quasar 3C147 were made at fourfrequencies in the available 5 GHz band, from which polarization in one bright feature in the innerjet was detected. The rotation measure of this feature (~ 1300 rad m-2) agrees with the knownhigh rotation measure of the source, which makes it possible to remove the Faraday screen pixel-by-pixeland obtain the intrinsic magnetic field structure. The arch shape of B vectors suggests that arelativistic and distorted jet is being seen in projection.

Keyword

VLBI polarimetry, magnetic fields, quasar 3C147 

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References

  1. Alef, W., Preuss, E., Kellermann, K.L., Whyborn, N. and Wilkinson, P.N.: 1988, Structural Variability in the Core of 3C147, in: Reid, M.J. and Moran, J.M. (eds.), IAU Symp. 129, The Impact of VLBI in Astrophysics and Geophysics, Kluwer, Dordrecht, pp. 95–96.Google Scholar
  2. Inoue, M., Tabara, H., Kato, T. and Aizu, K.: 1995, Search for High Rotation Measures in Extragalactic Radio Sources I. Multi-Channel Observations at 10 GHz, Publ. Astro. Sci. J. 47, 725–737.ADSGoogle Scholar
  3. Nan, R.D., Zhang, H.Y., Gabuzda, D.C., Ping, J.S., Schillizzi, R.T., Tian, W.W. and Inoue M.: 2000, High Rotation Measure in the Steep Spectrum Quasar 3C147. Astron. Astrophys., accepted, 2000.Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2001

Authors and Affiliations

  • H. Y. Zhang
    • 1
    • 2
  • R. D. Nan
    • 1
  1. 1.Beijing Astronomical Observatory, National Astronomical ObservatoriesChinese Academy of SciencesBeijingP.R. China
  2. 2.Astronomy DepartmentBeijing Normal UniversityBeijingP.R. China

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