Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.192p..11f&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 192, July 1980, p. 11P-14P. Research supported by the Radcliffe Trust.
Astronomy and Astrophysics
Astronomy
2
Emission Spectra, Neutron Stars, Precession, Stellar Models, Stellar Structure, Companion Stars, Doppler Effect, Flow Velocity, Helium, Hydrogen, Jet Flow, Periodic Variations, Radial Velocity, Stellar Motions
Scientific paper
The paper discusses jets emerging from diametrically opposite points fixed on the surface of a freely precessing neutron star which can naturally explain the motion of the spectral features of SS433. If the rotation axis of the neutron star is close to the line-of-sight, the equations describing the velocity shifts reduce to a similar form in the equations applied to the precessing jet model. The hydrogen and helium observed in an emission may originate from the surface of a companion star, about which the neutron star is in orbit; this companion induces the 13-day radial velocity and photometric variations and may be responsible for the elongated shape of W50.
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