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

## TL;DR

This study analyzes the broadband X-ray spectra of MXB 1659-298 in its soft and hard states, revealing different accretion and reflection features, and providing insights into the source's spectral components during outbursts.

## Contribution

It presents a detailed broadband spectral analysis of MXB 1659-298 across different states, including modeling of reflection and ionized absorption components.

## Key findings

- Soft state modeled with thermal and Comptonised components.
- Detection of smeared reflection and ionized absorber in both states.
- Hard state characterized by high-temperature Comptonised emission above 150 keV.

## 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.