4C 32.69 - A quasar with a radio jet
Robert I. Potash, John F. C. Wardle · The Astrophysical Journal · 1980
High resolution radio observations of the quasar 4C 32.69 (z = 0.67) are presented. This source exhibits a narrow radio jet, some 200 kpc in length, that reaches from the quasar nucleus to one of the outer radio lobes. This is the first such jet found in a quasar and is two to three orders of magnitude more luminous than similar jets found in relatively nearby radio galaxies. The jet contains a highly ordered magnetic field which is aligned parallel to the jet over its entire length. The physical properties of the jet are discussed in some detail, and it is concluded that the jet is probably not freely expanding. Two mechanisms for confining the jet: confinement by a helical magnetic field due to a current in the jet as discussed by Benford (1978); and confinement by the pressure of hot gas surrounding the quasar are discussed. X-ray observations should be able to distinguish between these possibilities.