Super-orbital period in the high-mass X-ray binary 2S 0114+650 |
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| Authors: | S A Farrell R K Sood P M O'Neill |
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| Institution: | School of Physical, Environmental and Mathematical Sciences, , Northcott Drive, Canberra, ACT 2600, Australia;Astrophysics Group, Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2AZ |
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| Abstract: | We report the detection of a stable super-orbital period in the high-mass X-ray binary 2S 0114+650. Analyses of data from the Rossi X-ray Timing Explorer All-Sky Monitor from 1996 January 5 to 2004 August 25 reveal a super-orbital 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 super-orbital period can be ascribed to the precession of a warped accretion disc in the system. |
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| Keywords: | accretion accretion discs stars: neutron X-rays: binaries |
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