The 35-d modulation of the X-ray emission of Her X-1 in the framework of the SOD model: results of a three-dimensional SPH simulation

• Published in: Monthly notices of the Royal Astronomical Society Vol. 267; no. 2; pp. 312 - 322
• Main Authors: Lanzafame, G., Belvedere, G., Molteni, D.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Oxford University Press 15.03.1994; Blackwell Science
• Subjects: accretion; accretion discs; Astronomy; binaries: close; Binary and multiple stars; Earth, ocean, space; Exact sciences and technology; hydrodynamics; methods: numerical; Stars; stars: individual: HZ Her; X-ray binaries; X-rays: stars; Hydrodynamic model; Periods; Three-dimensional calculations; X-ray binary stars; Accretion disks; Cosmic x-ray sources

Several models have been proposed to explain the 35-d X-ray periodicity observed in Her X-1. We present the results of six three-dimensional quasi-polytropic smoothed particle hydrodynamics (SPH) simulations of the tilted, twisted accretion disc of Her X-1 carried out in the light of Roberts’ slaved...