Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.244..474h&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 244, June 1, 1990, p. 474-477.
Astronomy and Astrophysics
Astronomy
3
Fluid Jets, Interstellar Matter, Particle Acceleration, Radio Emission, Relativistic Particles, X Ray Binaries, Bow Waves, Kelvin-Helmholtz Instability, Relativistic Velocity, Shock Wave Propagation, Visual Observation, X Ray Astronomy
Scientific paper
An explanation for the radio emission from the precessing jets of SS433 is proposed in terms of Fermi acceleration at shocks near the boundary of the jet material and the interstellar medium. Despite the mildly relativistic speed of the jets, it is found that the spectral index is most naturally explained by particle acceleration at a nonrelativistic shock. A consistent solution is found, which accounts also for the extent of the emission, provided that the density of the jet is less than 2000 times that of the ambient medium at about 10 to the 15th m from the source, consistent with measurements deduced from X-ray and optical observations.
Ballard K. R.
Heavens Alan F.
Kirk John G.
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