Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...219..392m&link_type=abstract
Astrophysical Journal, Part 1, vol. 219, Jan. 15, 1978, p. 392-399.
Astronomy and Astrophysics
Astrophysics
23
Astronomical Models, Detonation Waves, Extragalactic Radio Sources, Light Speed, Relativistic Velocity, Wave Propagation, Absorptivity, Density Distribution, Interferometry, Red Shift
Scientific paper
A ballistic-type model is presented which is capable of reproducing the observed nature of compact extragalactic double radio sources that exhibit superlight motions, while overcoming the probabilistic arguments raised against this class of models. The model considered involves a relativistic blast wave propagating through a medium that is confined to a disk and whose density decrease with radius. An analysis is performed which illustrates how such a blast wave can result in the appearance of two radio components which appear to separate at speeds exceeding twice the speed of light. The resulting behavior of the radio emission is shown to be consistent with existing observations of the sources 3C 120 and 3C 345. Properties of the model are discussed, which may be subject to future observational tests.
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