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.

Mazzola S.M., Iaria R., Gambino A.F., Marino A., Di Salvo T., Bassi T., et al. (2019). Broadband spectral analysis of MXB 1659-298 in its soft and hard state. MEMORIE DELLA SOCIETÀ ASTRONOMICA ITALIANA, 90(1-2), 96-99.

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

Mazzola S. M.
;
Iaria R.;Gambino A. F.;Marino A.;Di Salvo T.;Bassi T.;
2019

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.
12th INTEGRAL Conference and 1st AHEAD Gamma-Ray Workshop: INTEGRAL Looks AHEAD to Multi-Messenger Astronomy
Geneva
2019
Mazzola S.M., Iaria R., Gambino A.F., Marino A., Di Salvo T., Bassi T., et al. (2019). Broadband spectral analysis of MXB 1659-298 in its soft and hard state. MEMORIE DELLA SOCIETÀ ASTRONOMICA ITALIANA, 90(1-2), 96-99.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/430503
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