2008•UvA-DARE (University of Amsterdam)Requires access
Hard X-ray activity of IGR J17473-2721
Erik Kuulkers, Sara Elizabeth Shaw, Volker Beckmann, Søren K. Brandt, J. Chenevez, T. Courvoisier, A. Domingo, Ken Ebisawa, Peter Gustaaf Jonker, Peter Kretschmar, Craig B. Markwardt, T. Oosterbroek, Adamantia Paizis, Daniel Risquez, C. Sánchez‐Fernández, Rudy A. D. Wijnands
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Abstract
Persistent X-ray activity has been reported by Swift/XRT (ATel #1459) and RXTE/PCA (ATel #1460) from the transient IGR J17473-2721 (= XTE J1747-274; ATels #467, #498) after the detection of an X-ray burst by SuperAGILE (ATel #1445). We report the detection of persistent activity at 18-100 keV with INTERAL/IBIS/ISGRI. The average hard X-ray flux during the Galactic bulge monitoring observations (see ATel #1385) which started on UT 2008 April 1, 16:55 of the source was 41+2 mCrab and 42+3 mCrab, at 18-40 keV and 40-100 keV, respectively, indicating a hard spectral state.