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arxiv: 1307.0709 · v1 · submitted 2013-07-02 · 🌌 astro-ph.HE

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Discovering a 5.72 Day Period in the Supergiant Fast X-ray Transient AX J1845.0-0433

M. E. Goossens , A. J. Bird , S. P. Drave , A. Bazzano , A. B. Hill , V. A. McBride , V. Sguera , L. Sidoli
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classification 🌌 astro-ph.HE
keywords periodsupergiantfastj1845orbitalsystemtransientx-ray
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Temporal analysis of INTEGRAL/IBIS data has revealed a 5.7195\pm0.0007 day periodicity in the supergiant fast X-ray transient (SFXT) source AX J1845.0-0433, which we interpret as the orbital period of the system. The new-found knowledge of the orbital period is utilised to investigate the geometry of the system by means of estimating an upper limit for the size of the supergiant (<27 R_{\sun}) as well as the eccentricity of the orbit (\epsilon<0.37).

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