Radio sources with strong jets and weak cores

Details Radio sources with strong jets and weak cores Radio sources with strong jets and weak cores

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....94.1487l&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 94, Dec. 1987, p. 1487-1492.

Astronomy and Astrophysics

Astronomy

15

Astronomical Maps, Extragalactic Radio Sources, Plasma Jets, Radiant Flux Density, Doppler Effect, Flow Velocity, Relativistic Velocity

Scientific paper

High-resolution radio maps of radio quasars with strong jets and weak cores are presented. The implications of these low core-to-jet flux-density ratios are discussed, with particular regard to the possibility of relativistic flow speeds and Doppler boosting of the emission from the core and/or jet. It is demonstrated that the observed spread in core/jet flux ratios for radio sources, in general, is sufficiently large that no meaningful constraints can be placed on the relative flow velocities in the core and jet, contrary to earlier claims. The large spread also implies that there is probably a substantial scatter in intrinsic core/jet ratios, independent of beaming effects.

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