Thermonuclear X-ray burst of MXB 1658-298 with NuSTAR
Abstract
MXB 1658-298 is a transient Low-Mass X-ray Binary (LMXB), which shows eclipses, dips and bursts in its light curve. This source has undergone three active periods separated by long quiescent phases. The latest phase of enhanced X-ray emission was observed during 2015-2016. We have analysed broadband data from Swift/XRT and NuSTAR observations carried out in 2015. During NuSTAR observation, one thermonuclear X-ray burst took place. The X-ray emission during the burst was brighter by a factor of ∼ 200, compared to the pre-burst emission. This work focuses on the spectral analysis of MXB 1658-298 during the persistent and the burst phases using NuSTAR observation of 2015. We have also determined the temperature and radius evolution during the burst using the time-resolved spectroscopy. The burst phase shows mild Photospheric Radius Expansion (PRE).
- Publication:
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Journal of Astrophysics and Astronomy
- Pub Date:
- February 2018
- DOI:
- 10.1007/s12036-017-9497-y
- Bibcode:
- 2018JApA...39...16S
- Keywords:
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- Stars: neutron;
- X-ray: binaries;
- X-rays: bursts;
- X-rays: individual (MXB 1658-298)