Thirty-five-day cycle of HER X-1: Synthesised optical light curves in the model of freely processing neutron star

Details Thirty-five-day cycle of HER X-1: Synthesised optical light curves in the model of freely processing neutron star Thirty-five-day cycle of HER X-1: Synthesised optical light curves in the model of freely processing neutron star

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990esasp.311..235p&link_type=abstract

In ESA, Plasma Astrophysics p 235-237 (SEE N91-15046 06-90)

Astronomy and Astrophysics

Astrophysics

Accretion Disks, Astronomical Models, Light Curve, Neutron Stars, Stellar Radiation, Stellar Structure, X Ray Binaries, Axes Of Rotation, Cycles, Light (Visible Radiation), Stellar Rotation

Scientific paper

Synthesis of the optical light curve of HZ Her is carried out with freely precessing neutron star as a clock mechanism for a 35 day cycle in Her X-1. The rotational axis of the neutron star is tilted to the orbital plane. This results in highly irradiated, twisted accretion disc around the neutron star. Outer disc regions can be slightly tilted to the orbital plane. The disc inclination and the accretion rate onto neutron stars are shown to vary with the precession phase.

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