Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pazh....9..600c&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 9, Oct. 1983, p. 600-602) Soviet Astronomy Letters (ISSN 0360-0327), vol. 9, Sept.-Oct.
Astronomy and Astrophysics
Astronomy
Accretion Disks, Binary Stars, Precession, Variable Stars, X Ray Binaries, X Ray Stars, Light Curve, Stellar Rotation, Supernovae
Scientific paper
It is contended that if an oblique, slaved accretion disk tracks the forced precession of the normal star's rotation axis, both the 164 d long-term photometric variability of SS 433 and the 35 d optical variability of the accretion disk in the HZ Her (Her X-1) binary system can be explained. It is presumed that the rotation vector of the normal component and the orbital angular momentum were misaligned by an asymmetric supernova outburst. The precession of both accretion disks is thought to be caused by precession of the normal star's rotation axis. It is thought possible that the rotational momentum of the optical star was rendered nonparallel to the orbital angular momentum by an asymmetric supernova explosion in the binary system.
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