High-resolution maps of the hotspots of several class II radio galaxies

Details High-resolution maps of the hotspots of several class II radio galaxies High-resolution maps of the hotspots of several class II radio galaxies

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86..833d&link_type=abstract

Astronomical Journal, vol. 86, June 1981, p. 833-847.

Astronomy and Astrophysics

Astronomy

63

Astronomical Maps, High Resolution, Radiation Distribution, Radio Galaxies, Astronomical Coordinates, Morphology, Polarization Characteristics, Very Large Array (Vla)

Scientific paper

The Very Large Array was used to map the hotspots of 3C 390.3 at 5 GHz; of 3C 33 (south only), 3C 61.1 (south only), and 3C 234 at 15 GHz; and of Cyg A at 22 GHz. The beam was generally less than 0.4 arcsec and polarization was mapped at 5 and 15 GHz. A typical hotspot has an approximately 1-kpc head with a sharp outer edge approximately perpendicular to the source axis and less than or equal to 200 pc in width and with an opposed tail several kiloparsecs long. The hotspots are 25% to 40% polarized with the magnetic field parallel to the edges. Three of the hotspots show limb-brightening. The absence of Rayleigh-Taylor instabilities suggests that ne is less than or equal to 0.001/cu cm within the heads.

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