A new hard X-ray transient discovered by INTEGRAL: IGRJ17498-2921
Abstract
INTEGRAL discovered a new hard X-ray transient, IGR J17498-2921, during the observations performed from 2011-08-11 22:45 to 2011-08-12 05:54 UTC.
The source is detected in the IBIS/ISGRI mosaic at a preliminary significance level of 11 and 9 sigma in the 20-40 keV and 40-80 keV energy bands, respectively. The corresponding fluxes are 19+/-2 and 23+/-3 mCrab (68% c.l., only statistical). The best determined source position is at RA=17:49:49; DEC=-29:21:14 (J2000) with a 90% confinement radius of 2.3 arcmin. The IBIS/ISGRI spectrum (exposure time 15.9 ks) can be well described by a a power-law with photon index 1.9+/-0.4 (90% c.l.).- Publication:
-
The Astronomer's Telegram
- Pub Date:
- August 2011
- Bibcode:
- 2011ATel.3551....1G
- Keywords:
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- X-ray;
- Gamma Ray;
- Binary;
- Black Hole;
- Neutron Star;
- Transient