Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...233...11s&link_type=abstract
Astrophysical Journal, Part 1, vol. 233, Oct. 1, 1979, p. 11-20.
Astronomy and Astrophysics
Astronomy
5
Radio Sources (Astronomy), Relativistic Theory, Stellar Models, Synchrotron Radiation, Variable Stars, Compton Effect, Correction, Quantum Electrodynamics, Radio Astronomy, Relativistic Effects, Relativity, Shell Theory
Scientific paper
Two spherically symmetric models for relativistically expanding radio sources were examined: the filled-center canonical model and a shell model with constant absolute thickness. Analytical expressions are obtained for characteristic dynamical and electrodynamical quantities with no restriction on surface velocity, and the errors ensuing from a classical analysis of a given data set are estimated. Available data on the low-frequency variables CTA 102, 3C 454.3, and BL Lac are discussed in order to distinguish between the filled-center and shell models, discern evidence for or against Compton-limited source fueling, and evaluate the kinematical and dynamical consistency of the models. Comparison with the data shows that these low-frequency variables severely strain even the shell model, which is more favorable than the canonical model.
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