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arXiv:astro-ph/0502008 (astro-ph)
[Submitted on 1 Feb 2005 (v1), last revised 20 Dec 2005 (this version, v2)]

Title:Superorbital Period in the High Mass X-ray Binary 2S 0114+650

Authors:S. A. Farrell, R. K. Sood, P. M. O'Neill
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Abstract: We report the detection of a superorbital period in the high-mass X-ray binary 2S 0114+650. Analyses of data from the Rossi X-ray Timing Explorer (RXTE) All-Sky Monitor (ASM) from 1996 January 5 to 2004 August 25 reveal a superorbital period of 30.7 +/- 0.1 d, in addition to confirming the previously reported neutron star spin period of 2.7 h and the binary orbital period of 11.6 d. It is unclear if the superorbital period can be ascribed to the precession of a warped accretion disc in the system.
Comments: 5 pages, 5 figures, submitted to MNRAS 27th January 2005. Manuscript expanded to include discussion of evolution of periods, and hardness ratio variability. Number of figures increased from 5 to 9. Accepted for publication 19th December 2005
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:astro-ph/0502008
  (or arXiv:astro-ph/0502008v2 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0502008
Journal reference: Mon.Not.Roy.Astron.Soc. 367 (2006) 1457-1462
Related DOI: https://doi.org/10.1111/j.1365-2966.2006.10150.x

Submission history

From: Sean Farrell Mr [view email]
[v1] Tue, 1 Feb 2005 05:21:58 UTC (162 KB)
[v2] Tue, 20 Dec 2005 01:23:05 UTC (750 KB)
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