Linear size distribution of double radio sources in the constant speed symmetric expansion model

Details Linear size distribution of double radio sources in the constant speed symmetric expansion model Linear size distribution of double radio sources in the constant speed symmetric expansion model

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.140..291b&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 140, no. 2, Jan. 1988, p. 291-300.

Astronomy and Astrophysics

Astrophysics

2

Astronomical Models, Extragalactic Radio Sources, Light Speed, Magnetohydrodynamic Waves, Quasars, Starspots, Line Of Sight, Size Distribution

Scientific paper

The distribution of projected linear sizes of double radio sources is derived in an intrinsically symmetric model in which the hot spots move away from the parent object at speed v before fading at time T after their simultaneous origin. This is applied to a sample of doubles, separating the two asymmetry types, the closer-hot-spot-brighter (yes-type) and closer-hot-spot-fainter (no-type). Along with the arm-ratio distributions for the two classes, no-doubles very roughly indicate v of about 0.3 c, but no consistent value can be found for yes-doubles. A possible generalization of the model is suggested to allow different expansion speeds for different sources (though still retaining the intrinsic bilateral symmetry). Other effects that could be included in the model are also indicated.

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