Recent WSRT and VLA observations of the jet radio galaxy NGC 6251.
Abstract
Observations of the radio emission associated with NGC 6251 at 49 cm wavelength, performed with the Westerbork Synthesis Radio Telescope, are reported and analyzed. A radio map of the observations reveals a faint counter jet which extends to the southeast from the central core source. The cross-sectional integrated emission from this jet is approximately 1/60 that of the main jet, and both jets are found to have rotational symmetry. In addition, it is found that for the main jet, RM values range from -10 rad/sq m at approximately 40 arcsec distances to 130 rad/sq m at approximately 18 arcsec distances. Finally, observations show that the magnetic field has a projected diagonal orientation in relation to the main jet extension between 20 and 40 arcsec distances from the core and also within the 180-260 arcsec range. At other distances, the magnetic field is either parallel or perpendicular to the jet extension.
- Publication:
-
Extragalactic Radio Sources
- Pub Date:
- 1982
- Bibcode:
- 1982IAUS...97..141W
- Keywords:
-
- Elliptical Galaxies;
- Extragalactic Radio Sources;
- Plasma Jets;
- Radio Telescopes;
- Synthetic Arrays;
- Astronomical Maps;
- Faraday Effect;
- Interstellar Magnetic Fields;
- Magnetic Field Configurations;
- Astrophysics