Astronomy and Astrophysics – Astronomy
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...427..125l&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 427, no. 1, p. 125-133
Astronomy and Astrophysics
Astronomy
11
Extragalactic Radio Sources, Quasars, Radio Astronomy, Red Shift, Spiral Galaxies, Statistical Analysis, Astronomical Catalogs, Intergalactic Media, Line Of Sight, Luminosity
Scientific paper
We discuss the statistics of projection on the sky of a simple model for radio sources. The model has a core and two hot spots at unequal distance with an overall structure which is bent at the core. We examine the distributions of the observed sizes and bend angles in 114 quasars and 78 radio galaxies with z less than 2, from our own data. We find that the observations are well matched by this model with (a) a size distribution matching the observed one, (b) core-hotspot length differences between 0 and 45 kpc, and (c) bend angles distributed between 0 deg and approximately 25 deg, where quasars are seen within 50 deg of the source axis, and radio galaxies are seen at greater angles. We discuss the implications of these fits to unified models and source evolution.
Gower Ann C.
Hutchings John B.
Lister Matthew L.
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