Detection and analysis of a new INTEGRAL hard X-ray transient, IGR J17285-2922

E. J. Barlow; A. J. Bird; D. J. Clark; R. Cornelisse; A. J. Dean; A. B. Hill; L. Moran; V. Sguera; S. E. Shaw; D. R. Willis; F. Capitanio; M. Del Santo; L. Bassani

doi:10.1051/0004-6361:200500131

arXiv · astro-ph/0505405

Detection and analysis of a new INTEGRAL hard X-ray transient, IGR J17285-2922

E. J. Barlow·A. J. Bird·D. J. Clark·R. Cornelisse·A. J. Dean·A. B. Hill·L. Moran·V. Sguera·S. E. Shaw·D. R. Willis·F. Capitanio·M. Del Santo·L. Bassani

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Abstract

We present the transient nature of INTEGRAL source IGR J17285-2922, identified from a single period of activity during an IBIS/ISGRI Galactic Centre Deep Exposure in September 2003. The source has a maximum detection significance of 14 sigma in the 20-100 keV energy range and exhibits a flux of 6.5 mCrab before it moves out of the ISGRI field of view. The source is visible to at least 150 keV and its spectrum can be fit with a power law slope of Gamma=2.1+/-0.17; a more physical model could not be fit due to poor statistics. Detected characteristics are consistent with the source being a Galactic low-mass X-ray binary harbouring a black hole or neutron star.

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E. J. Barlow, A. J. Bird, D. J. Clark, R. Cornelisse, A. J. Dean, A. B. Hill, L. Moran, V. Sguera, S. E. Shaw, D. R. Willis, F. Capitanio, M. Del Santo, L. Bassani. 2005-05-19. Detection and analysis of a new INTEGRAL hard X-ray transient, IGR J17285-2922. https://doi.org/10.1051/0004-6361%3A200500131

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