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Thermonuclear X-ray burst of MXB 1658-298 with NuSTAR

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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 \(\sim 200\), 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).

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Notes

  1. http://www.swift.ac.uk/analysis/xrt/pileup.php.

  2. Barycenter corrected.

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Acknowledgements

This research has made use of data obtained from the High Energy Astrophysics Science Archive Research Center (HEASARC), provided by NASA-GSFC.

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Correspondence to Rahul Sharma.

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Sharma, R., Jaleel, A., Jain, C. et al. Thermonuclear X-ray burst of MXB 1658-298 with NuSTAR. J Astrophys Astron 39, 16 (2018). https://doi.org/10.1007/s12036-017-9497-y

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  • DOI: https://doi.org/10.1007/s12036-017-9497-y

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