An oscillating jet in the nearby radio galaxy 1759 + 211

Details An oscillating jet in the nearby radio galaxy 1759 + 211 An oscillating jet in the nearby radio galaxy 1759 + 211

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.224...53s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 224, Jan. 1, 1987, p. 53-60.

Astronomy and Astrophysics

Astronomy

7

Mach Number, Radio Galaxies, Radio Jets (Astronomy), Magnetic Fields, Mapping

Scientific paper

The authors present VLA observations of the nearby radio galaxy 1759+211 at 20 and 6 cm with both the B and A arrays, and at 2 cm with only the A array. These observations reveal gross double structure with an oscillating one-sided radio jet whose oscillation wavelength increases significantly beyond about the optical extent of the galaxy. The jet has a largely parallel magnetic field but, unlike almost all sources with such a field configuration, it has a very weak core. After several apparent oscillations, the jet bends significantly towards the northwest and becomes diffuse. The authors consider a few possible explanations for the morphology and suggest that if hydrodynamical instabilities cause the inner wiggles and ram-pressure bending produces the final large curvature then a consistent set of jet parameters is possible.

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