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arXiv · 0905.4866

The supergiant fast X-ray transient IGRJ18483-0311 in quiescence: XMM-Newton, Swift, and Chandra observations

A. Giunta·E. Bozzo·F. Bernardini·G. Israel·L. Stella·M. Falanga·S. Campana·A. Bazzano·A. J. Dean·M. Mendez
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Abstract

IGR J18483-0311 was discovered with INTEGRAL in 2003 and later classified as a supergiant fast X-ray transient. It was observed in outburst many times, but its quiescent state is still poorly known. Here we present the results of XMM-Newton, Swift, and Chandra observations of IGRJ18483-0311. These data improved the X-ray position of the source, and provided new information on the timing and spectral properties of IGR J18483-0311 in quiescence. We report the detection of pulsations in the quiescent X-ray emission of this source, and give for the first time a measurement of the spin-period derivative of this source. In IGRJ18483-0311 the measured spin-period derivative of -(1.3+-0.3)x10^(-9) s/s likely results from light travel time effects in the binary. We compare the most recent observational results of IGRJ18483-0311 and SAXJ1818.6-1703, the two supergiant fast X-ray transients for which a similar orbital period has been measured.

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A. Giunta, E. Bozzo, F. Bernardini, G. Israel, L. Stella, M. Falanga, S. Campana, A. Bazzano, A. J. Dean, M. Mendez. 2009-05-29. The supergiant fast X-ray transient IGRJ18483-0311 in quiescence: XMM-Newton, Swift, and Chandra observations. https://doi.org/10.1111/j.1365-2966.2009.15174.x

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