Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...259..445f&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 259, no. 2, p. 445-452.
Astronomy and Astrophysics
Astronomy
15
Extragalactic Radio Sources, Interstellar Matter, Particle Acceleration, Radio Jets (Astronomy), Synchrotron Radiation, Boundary Layers, Digital Simulation, Relativistic Particles
Scientific paper
The origin of the synchrotron radiation from extragalactic jets is shown to be the interaction between the jet and the interstellar medium. This result is derived from a synthesis of available observations which strongly indicates that the one-sidedness is an intrinsic asymmetry. A plausible theoretical scheme is established and leads to the conclusion that the visible jet is interacting less with the interstellar medium than the invisible one (counterjet), contrary to a first intuition. The density asymmetry of the interstellar medium required by the theory is in agreement with the observations. This model does not only account for the one-sidedness of extragalactic radiosources but more broadly for double sources with no or two visible jets, for the small number of optical jets, and for some other properties of radiosources.
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