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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
Date
2000-01-01
Author
Inam, SC
Baykal, Altan
Metadata
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Using archival BATSE (Burst and Transient Source Experiment) 20-50 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).
Subject Keywords
X-rays : stars
,
Stars : pulsars : individual : Vela X1
,
Stars : pulsars : individual : GX 301-2
,
Stars : pulsars : individual : OAO 1657-415
,
Accretion, Accretion disks
URI
https://hdl.handle.net/11511/53893
Journal
ASTRONOMY & ASTROPHYSICS
Collections
Department of Physics, Article
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S. Inam and A. Baykal, “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,”
ASTRONOMY & ASTROPHYSICS
, pp. 617–623, 2000, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53893.