Broadband spectral analysis of MXB 1659-298 in its soft and hard state

Iaria R.;Mazzola S. M.;Bassi T.;GambinoA. F.;Marino A.;Di Salvo T;Sanna A.

Conceptualization

;Riggio A.;Burderi L.;D'Amico N.

2019-01-01

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Abstract

The X-ray transient eclipsing source MXB 1659-298 went in outburst in 1999 and 2015, respectively, during which it was observed by XMM-Newton, NuSTAR and Swift. Using these observations we studied the broadband spectrum of the source to constrain the continuum components and to verify the presence of a reflection component. We analysed the soft and hard state of the source, finding that the soft state can be modelled with a thermal component associated with the inner accretion disc plus a Comptonised component. A smeared reflection component and the presence of an ionised absorber are also requested in the best-fit model. On the other hand, the direct continuum emission in the hard state can be described by a Comptonised component with a temperature larger than 150 keV. Also in this case a reflection component and a ionised absorber are observed....