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Discovery of type-I X-ray bursts from GRS 1741.9-2853

M. Cocchi·A. Bazzano·L. Natalucci·P. Ubertini·J. Heise·J. M. Muller·J. J. M. in 't Zand
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Abstract

For the first time X-ray bursts have been detected from a sky position consistent with the one of GRS 1741.9-2853, a GRANAT transient source located only ~10' from the Galactic Centre. A total of 3 bursts have been observed by the Wide Field Cameras telescopes on board BeppoSAX during a monitoring observation of the Sgr A region in August-September 1996. The characteristics of the events are consistent with type-I bursts, thus identifying the source as a likely low-mass X-ray binary containing a neutron star. Evidence of photospheric radius expansion due to super-Eddington luminosity is present in one of the observed bursts, thus leading to an estimate og the source distance (~8 kpc).

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M. Cocchi, A. Bazzano, L. Natalucci, P. Ubertini, J. Heise, J. M. Muller, J. J. M. in 't Zand. 1999-05-14. Discovery of type-I X-ray bursts from GRS 1741.9-2853. https://arxiv.org/abs/astro-ph/9905184

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