Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....95..250w&link_type=abstract
Astronomy and Astrophysics, vol. 95, no. 2, Mar. 1981, p. 250-265.
Astronomy and Astrophysics
Astrophysics
90
Centimeter Waves, Interstellar Magnetic Fields, Linear Polarization, Radio Galaxies, Cores, Galactic Radio Waves, Jets, Radio Observation, Spectrum Analysis
Scientific paper
Observations at 49 cm and 21 cm of the total and polarized intensities of the jets and extended lobes in the large radio galaxy NGC 315 are presented. The dominant component of the magnetic field in both the main and counter jets is well organized and is oriented perpendicular to the extension of the jets over most of their length. The degree of polarization, P, of the jet emission increases with distance from the central radio core, indicating an increasingly ordered magnetic field within the jets. The main jet does not expand at a constant rate, and a combination of intensity and lateral expansion properties is used to characterize six different regimes in order of distance from the central core. Inner regimes of rapid expansion are followed by regimes of lateral confinement and apparently free expansion respectively.
Bridle Alan H.
Fomalont Edward B.
Strom Richard G.
Willis George A.
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