X-ray Flux and Pulse Frequency Changes of Three High Mass X-ray Binary Pulsars: Vela X-1, GX 301-2 and OAO 1657-415

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dc.creatorInam, Sitki Cagdas
dc.creatorBaykal, Altan
dc.date1999-11-02
dc.date.accessioned2026-07-07T02:34:11Z
dc.date.available2026-07-07T02:34:11Z
dc.descriptionUsing archival BATSE (Burst and Transient Source Experiment) 20-60 keV band X-ray flux and pulse frequency time series, we look for correlations between torque, luminosity and specific angular momentum for three high mass X-ray binary pulsars Vela X-1, GX 301-2 and OAO 1657-415. Our results show that there is no correlation between pulse frequency derivative and flux which may be an indication of the absence of stable prograde accretion disk. From the strong correlation of specific angular momentum and torque, we conclude that the accretion geometry changes continuously as suggested by the hydrodynamic simulations(Blondin et al. 1990).
dc.description14 pages, 9 figures, accepted for publication in Astronomy and Astrophysics
dc.identifierhttps://arxiv.org/abs/astro-ph/9911013
dc.identifierhttp://arxiv.org/abs/astro-ph/9911013
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/15145
dc.subjectAstrophysics
dc.titleX-ray Flux and Pulse Frequency Changes of Three High Mass X-ray Binary Pulsars: Vela X-1, GX 301-2 and OAO 1657-415
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