Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...239...42p&link_type=abstract
Astrophysical Journal, Part 1, vol. 239, July 1, 1980, p. 42-49. NSF-supported research.
Astronomy and Astrophysics
Astronomy
67
Quasars, Radio Jets (Astronomy), Radio Sources (Astronomy), Astronomical Maps, Fluid Pressure, High Temperature Gases, Linear Polarization, Physical Properties, Plasma Control, Radio Astronomy
Scientific paper
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.
Potash R. I.
Wardle John F. C.
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