5.05s probable spin period detected in X-rays from IGR J00569-7226 = SXP5.05
ATel #5662; M. J. Coe (Southampton University), A. J. Bird (Southampton University), J. A. Kennea (PSU), V. A. McBride (UCT/SAAO), E. S. Bartlett (UCT), L. J. Townsend (UCT) and F. Haberl (MPE).
on 14 Dec 2013; 16:04 UT
Credential Certification: Malcolm Coe (firstname.lastname@example.org)
Subjects: X-ray, Gamma Ray, Binary, Pulsar
A combination of Swift/XRT and XMM-Newton observations over the last 30 days has detected a modulation in the X-ray flux at a period of 5.05s in the newly discovered Small Magellanic Cloud source IGR J00569-7226 (Coe et al ATel #5547, Kennea ATel #5553). This probable spin period, combined with the proposed orbital period of 17d (Schmidtke et al ATel #5557, Coe et al ATel #5631) puts this system on the edge of the Corbet diagram for Be/X-ray binary systems.
The Type II outburst, which started in Sep 2013, continues.