Jets in a sample of low luminosity radio galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Luminosity, Plasma Jets, Radio Galaxies, Samples, Brightness Distribution, Elliptical Galaxies, Interstellar Magnetic Fields, Polarization Characteristics, Radio Astronomy

Scientific paper

A sample of low luminosity radio galaxies was obtained by identifying radio sources from the B2 catalog with galaxies from the Zwicky catalog. For all 40 galaxies of the sample observations were done at 5, 1.4 and 0.6 GHz with the Westerbork Synthesis Radio Telescope (WSRT), using the technique of short cuts. The sources with complex structure and with too low surface brightness were reobserved at WRST for 12 hours at 1.4 or at 5 GHz. In a large number of these sources jets were detected (9 out of 17). The low luminosity radiosource B2 1321+31 is emphasized. In some regions in the jet the brightness and polarization data suggest that the flow velocity along the jet decreases.

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