Collimation of extragalactic jets - Evidence from hotspots

Details Collimation of extragalactic jets - Evidence from hotspots Collimation of extragalactic jets - Evidence from hotspots

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.208p...7b&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 208, May 1, 1984, p. 7P-10P.

Astronomy and Astrophysics

Astronomy

6

Collimation, Extragalactic Radio Sources, Plasma Jets, Free Jets, Quasars

Scientific paper

A linear relation with slope near unity is found between the logarithms of the hotspot size ψHS perpendicular to the source major axis and the distance θ from the core for 14 compact and/or intense hotspots selected from a sample of 31 quasars having the largest angular sizes at various redshifts, as observed at 4.87 GHz with sub-arcsec resolution. A slope significantly less than 1 implies that the jet feeding the hotspot is laterally confined by the intergalactic medium, whereas a slope of 1 does not distinguish between a laterally confined jet and a free jet. The author's relation has a slope near 1 and implies a 0°.1 jet confined within a cone of half-angle 15° to 20° or a 1°-wide free jet.

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