Hot spots in the outer lobes of extragalactic radiosources

Details Hot spots in the outer lobes of extragalactic radiosources Hot spots in the outer lobes of extragalactic radiosources

Jun 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....67..157k&link_type=abstract

Astronomy and Astrophysics, vol. 67, no. 1, June 1978, p. 157-160.

Astronomy and Astrophysics

Astronomy

18

Angular Resolution, Extragalactic Radio Sources, Radiant Flux Density, Radio Astronomy, Cosmology, Quasars, Radio Galaxies, Red Shift

Scientific paper

A plot of the angular sizes of individual lobes of double radio sources against redshift suggests that lobe sizes may undergo similar evolutionary effects with epoch as the lobe separations. An angular resolution of better than 0.5 arcsec may be necessary in order to see 'hotspots', similar to those in Cyg A, in the lobes of sources at high redshifts. The evolutionary effects in lobe sizes together with the limited resolution of the existing observations could account for the recently reported correlations between source luminosity and the intensity and size of 'hotspots' in the 3CR source sample.

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