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BeppoSAX Observations of the galactic source GS1826-238 in a hard X-ray high state

Stefano Del Sordo·Filippo Frontera·Elena Pian·Santina Piraino·Tim Oosterbroek·B. A. Harmon·Eliana Palazzi·Marco Tavani·S. N. Zhang·Arvind Parmar
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Abstract

The BeppoSAX Narrow Field Instruments observed the galactic source GS1826-238 in October 1997, following a hard X-ray outburst with a peak flux of about 100 mCrab detected by BATSE. Two short X-ray bursts (about 150 s) were detected up to 60 keV, with larger amplitude and duration at lower energies(up to a factor 20 times the persistent emission). This confirms the proposed identification of the source as a weakly magnetized neutron star in a LMXRB system. For both persistent and burst states, the spectrum in the 0.4-100 keV energy range is well fitted by an absorbed blackbody, plus a flat power-law with an exponential cutoff at 50 keV.

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Stefano Del Sordo, Filippo Frontera, Elena Pian, Santina Piraino, Tim Oosterbroek, B. A. Harmon, Eliana Palazzi, Marco Tavani, S. N. Zhang, Arvind Parmar. 1999-01-15. BeppoSAX Observations of the galactic source GS1826-238 in a hard X-ray high state. https://arxiv.org/abs/astro-ph/9901203

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