Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.207..311b&link_type=abstract
In ESA Plasma Astrophys. p 311-314 (SEE N85-22270 12-90)
Astronomy and Astrophysics
Astrophysics
Accretion Disks, Emission Spectra, Light Emission, Line Spectra, Stellar Luminosity, Stellar Spectra, Optical Emission Spectroscopy, Plasma Density, Plasma Jets
Scientific paper
It is shown that the collimated jets of SS433 accelerated in the funnels of thick accretion disks become thermally unstable outside these funnels and fragments in clumps which reach a stationary configuration at a temperature of about 10,000 K. These clumps can emit the optical lines observed. The density is such to produce the H alpha luminosity observed; the filling factor is small enough to reduce within acceptable limits the energetic requirements for powering this source with a stellar-size object. The condensations are in pressure equilibrium with the ambient hot phase, and move outwards at the same speed of the jet, which is determined by the acceleration phase inside the accretion disk funnels. The dispersion velocity of the clumps is very small, in agreement with the narrowness of the emission lines.
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