Swift, RXTE, and INTEGRAL observation of Swift J1922.7-1716

Abstract

We report the results of analyzing Swift, RossiXTE, and INTEGRAL data of Swift J1922.7-1716, a likely transient X-ray source discovered by Swift/BAT. Both the fast variability measured by the RXTE/PCA and the combined Swift/XRT, RXTE/PCA, and INTEGRAL/ISGRI (0.5-100 keV) energy spectrum suggest that the system is a neutron-star low-mass X-ray binary or a black-hole candidate at low accretion levels. The non-simultaneous spectra are consistent with the same spectral shape and flux, suggesting little variability over the period July to October 2005, but the analysis of archival INTEGRAL data shows that the source was not detected in 2003-2004, suggesting a transient or strongly variable behavior.

arXiv comment4 pages, 2 figures, accepted for publication on A&A Letters

References in corpus (10)

• ISGRI: the INTEGRAL Soft Gamma-Ray Imager
• A Unified Description of the Timing Features of Accreting X-ray Binaries
• In-flight Performance of the High Energy X-ray Timing Experiment on the Rossi X-ray Timing Explorer
• The INTEGRAL/IBIS Scientific Data Analysis
• Hard X-ray Emission From Low Mass X-ray Binaries
• Long Term Variability of Cygnus X-1. IV. Spectral Evolution 1999-2004
• A new technique for the detection of periodic signals in ``coloured'' power spectra
• The INTEGRAL IBIS/ISGRI System Point Spread Function and Source Location Accuracy
• A measurement of the broad-band spectrum of XTE J1118+480 with BeppoSAX and its astrophysical implications
• A Low/Hard State Outburst of XTE J1550-564

Cited by in corpus (5)

• The Swift/BAT Hard X-ray Transient Monitor
• The 22-Month Swift-BAT All-Sky Hard X-ray Survey
• Low-level accretion in neutron-star X-ray binaries
• Two new bursting neutron star low-mass X-ray binaries: Swift J185003.2-005627 and Swift J1922.7-1716
• On the recurrence times of neutron star X-ray binary transients and the nature of the Galactic Centre quiescent X-ray binaries