Discovering a 5.72 Day Period in the Supergiant Fast X-ray Transient AX J1845.0-0433
Abstract
Temporal analysis of INTEGRAL/IBIS data has revealed a 5.71950.0007 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) as well as the eccentricity of the orbit (ε<0.37).
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