Spectral and timing analysis of the accreting millisecond pulsar IGR J17511-3057 with NuSTAR, Swift/XRT and XMM-Newton of the latest outburst
Abstract
Accretion-powered millisecond pulsars are transient low mass X-ray binaries, which show a coherent modulation of their X-ray fluxes with periods of the order of few milliseconds.Up to now, 20 accreting millisecond pulsars are known. Of these, only a few have shown more than an outburst and thus permitting to study the evolution of such a systems. We present a detailed broad band spectral analysis of the 2015 outburst of the accreting millisecond pulsar IGR J17511-3057 as simultaneously seen by NuSTAR and Swift, and compare our results with the XMM-Newton observation of the same outburst and the first outburst. We obtained a very precise orbital solution for the 2015 outburst through timing analysis of both NuSTAR and XMM-Newton observations. Moreover, comparing the this orbital solution with the one for the 2009 outburst, we are able to pose strong constraints on the orbital period derivative and the orbital evolution of the source.
- Publication:
-
42nd COSPAR Scientific Assembly
- Pub Date:
- July 2018
- Bibcode:
- 2018cosp...42E2854R