Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...156..315f&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 156, no. 1-2, Feb. 1986, p. 315-322.
Astronomy and Astrophysics
Astrophysics
13
Extragalactic Radio Sources, Quasars, Asymmetry, Line Of Sight
Scientific paper
The implications are considered of a common and quite reasonable interpretation of the asymmetry presented by several extragalactic double radio sources, ascribing the asymmetry to the effect that is bound to occur when the two sources move away from the central object with a velocity component in the line of sight direction which is a sizable fraction of the velocity of light. If this interpretation is correct, the double sources with a pronounced asymmetry are seen foreshortened; thus, they should present physical sizes that are statistically smaller than the sizes of more symmetrical sources. Such a difference, if it exists, would be ascertainable in spite of the large spread in the intrinsic dimensions of the objects. No significant difference was found between the apparent size distributions of symmetrical and asymmetrical double radio sources, leading to the conclusion that the asymmetry must be ascribed to other factors.
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