| Issue |
A&A
Volume 437, Number 2, July II 2005
|
|
|---|---|---|
| Page(s) | L27 - L30 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:200500131 | |
| Published online | 21 June 2005 | |
Letter to the Editor
Detection and analysis of a new INTEGRAL hard X-ray transient, IGR J17285-2922
1
School of Physics and Astronomy, University of Southampton, Highfield, SO17 1BJ, UK e-mail: ejb@astro.soton.ac.uk
2
Science Data Centre, 1290 Versoix, Switzerland
3
IASF/CNR, via del Fosso del Cavaliere 100, 00133 Roma, Italy
4
IASF/CNR Section of Bologna, via P. Gobetti 101, 40129 Bologna, Italy
Received:
15
March
2005
Accepted:
22
May
2005
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 14σ 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 
; 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.
Key words: gamma-rays: observations / surveys / X-rays: individuals: IGR J17285-2922 / X-rays: binaries
© ESO, 2005
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