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

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

2006-07-11

arxiv.org/abs/astro-ph/0607229v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, accepted for publication on A&A Letters

Scientific paper

10.1051/0004-6361:20065456

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.

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