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

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.

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S. A. Farrell, R. K. Sood, P. M. O'Neill. 2005-12-20. Superorbital Period in the High Mass X-ray Binary 2S 0114+650. https://doi.org/10.1111/j.1365-2966.2006.10150.x

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