Jérôme Rodriguez et al 2007 ApJ 655 L97 doi:10.1086/511819
Jérôme Rodriguez1, Marion Cadolle Bel1,2, John A. Tomsick3,4, Stéphane Corbel1, Catherine Brocksopp5, Ada Paizis6, Simon E. Shaw7,8 and Arash Bodaghee8,9
Show affiliationsWe report the results of a series of RXTE and ATCA observations of the recently discovered X-ray transient IGR J17497-2821. Our 3-200 keV PCA+HEXTE spectral analysis shows very little variations over a period of ~10 days around the maximum of the outburst. IGR J17497-2821 is found in a typical low-hard state (LHS) of X-ray binaries (XRBs), well represented by an absorbed Comptonized spectrum with an iron edge at about 7 keV. The high value of the absorption (~4 × 1022 cm-2) suggests that the source is located at a large distance, either close to the Galactic center or beyond. The timing analysis shows no particular features, while the shape of the power density spectra is also typical of the LHS of XRBs, with ~36% rms variability. No radio counterpart is found down to a limit of 0.21 mJy at 4.80 and 8.64 GHz. Although the position of IGR J17497-2821 in the radio to X-ray flux diagram is well below the correlation usually observed in the LHS of black holes, the comparison of its X-ray properties with those of other sources leads us to suggest that it is a black hole candidate.
accretion, accretion disks; black hole physics; stars: individual (Cygnus X-1, IGR J17497–2821, SWIFT J1753.5–0127, XTE J1550–564)
Issue 2 (2007 February 1)
Received 2006 November 10, accepted for publication 2006 December 14
Published 2007 January 11
Jérôme Rodriguez et al 2007 ApJ 655 L97
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C Müller et al 2009 J. Phys. B: At. Mol. Opt. Phys. 42 221001
T S Chan et al 2009 J. Phys.: Conf. Ser. 190 012095
J G Titus et al 2009 Environ. Res. Lett. 4 044008
Piotr Bizoń et al 2009 Class. Quantum Grav. 26 225015
M Boezio et al 2009 New J. Phys. 11 105023
Lijia Liu et al 2009 J. Phys.: Conf. Ser. 190 012133