Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...239..221i&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 239, no. 1-2, Nov. 1990, p. 221-226. Research supported by Universiteit van Am
Astronomy and Astrophysics
Astrophysics
47
Accretion Disks, Stellar Models, X Ray Binaries, Neutron Stars, Stellar Evolution, Stellar Mass Accretion
Scientific paper
Computer simulations of the precession of tilted, twisted disks in X-ray binaries have shown that the precession process may deviate from perfect periodicity by a substantial amount, in particular when the influence of the (strongly variable) X-ray emission on the warp-structure of the disk is taken into account. The result, a quasi-periodic disk precession, may be applicable to Cen X-3, and similar systems. The illumination of the disk by the central X-ray source may also play a major role in the tilting mechanism, which inclines the disk rings away from the binary plane. Implications for Her X-1 and other X-ray binaries with a precessing accretion disk are briefly discussed.
Iping Rosina C.
Petterson Jacobus A.
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