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Magnetic Fields in Quasar 3C147 on Milliarcsecond Scales

Published online by Cambridge University Press:  12 April 2016

H.Y. Zhang  and
R.D. Nan
H.Y. Zhang
Affiliation:
Beijing Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100012, P.R. China Astronomy Department, Beijing Normal University, Beijing 100875, P.R. China
R.D. Nan
Affiliation:
Beijing Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100012, P.R. China

Abstract

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

Keywords

VLBI polarimetry, magnetic fields, quasar 3C147
Type
Chapter Three Intra-Day Variability, Gravitational Lensing and Polarization
Information
International Astronomical Union Colloquium , Volume 182: Sources and Scintillations: Refraction and Scattering in Radio Astronomy , 2001 , pp. 143 - 146
Copyright
Copyright © Kluwer 2001

References

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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