Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984aj.....89..979b&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 89, July 1984, p. 979-986.
Astronomy and Astrophysics
Astronomy
90
Extragalactic Radio Sources, Galactic Radiation, Radio Jets (Astronomy), Collimators, Magnetic Field Configurations, Quasars, Radio Galaxies
Scientific paper
Data on 125 extragalactic radio jets are used to show that those in sources with total powers approximately equal to or less than 10 to the (24.5) power W/Hz at 1.4 GHz (or, equivalently, core powers less than 10 to the 23rd W/Hz at 5 GHz) are generally two sided and dominated by perpendicular magnetic field components over most of their lengths. In contrast, those in sources with larger total and core powers are generally one sided and dominated by parallel magnetic field components over most of their lengths. The resolved jets in the weaker sources generally have faster lateral expansion (spreading) rates than those in the more powerful sources.
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