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INTEGRAL spots renewed activity from H1743-322

ATEL # 1739; E. Kuulkers (ESA/ESAC, Spain), S. Brandt, C. Budtz-Jorgensen, J. Chenevez (DTU/NSI, Denmark), S. Shaw (Southampton, UK/ ISDC, Switzerland), V. Beckmann, T.J.-L. Courvoisier (ISDC, Switzerland), A. Domingo (LAEFF/INTA, Spain), K. Ebisawa (ISAS, Japan), R. Galis (ISDC, Switzerland), P. Jonker (SRON, The Netherlands), P. Kretschmar (ESA/ESAC, Spain), C. Markwardt (GSFC, USA), T. Oosterbroek (ESA/ESTEC, The Netherlands), A. Paizis (INAF-IASF, Italy), C. Sanchez-Fernandez (ESA/ESAC, Spain), R. Wijnands (UvA, The Netherlands)
on 25 Sep 2008; 10:44 UT
Distributed as an Instant Email Notice (Transients)
Password Certification: Erik Kuulkers (

Subjects: X-ray, Gamma Ray, Request for Observations, Binaries, Black Holes, Transients, Variables
Referred to by ATEL #: 1745

INTEGRAL Galactic Bulge monitoring (see ATels #438, #874, #1005, #1385) observations on UT 2008 Sep 23 08:51-12:34 reveal a new outburst of the Galactic black-hole candidate and X-ray transient H1743-322/IGR J17464-3213 (see ATels #132, #136, #576, #593, #1348, #1385, #1414). JEM-X and IBIS/ISGRI show a hard X-ray source; the observed fluxes are about 10 mCrab (3-10 keV), 12 mCrab (10-25 keV), 17 mCrab (18-40 keV), and 31 mCrab (40-100 keV). Previous Galactic Bulge monitoring observations between 2008 Aug 18 and Sep 20 did not show any emission from the source with typical 3 sigma upper limits of about 10-20 mCrab (3-25 keV) and 5-10 mCrab (18-40 keV, 40-100 keV).

The INTEGRAL Galactic Bulge Monitoring web pages

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R. E. Rutledge , Editor
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