Outburst of the X - Ray Transient Saxj 1818 . 6 - 1703 Detected by Integral in September 2003
نویسنده
چکیده
During the observation of the Galactic-center field by the INTEGRAL observatory on September 9, 2003, the IBIS/ISGRI gamma-ray telescope detected a short (several-hourslong) intense (∼ 380 mCrab at the peak) outburst of hard radiation from the X-ray transient SAXJ1818.6-1703. Previously, this source was observed only once in 1998 during a similar short outburst. We present the results of our localization, spectral and timing analyses of the object and briefly discuss the possible causes of the outburst. The release time of the bulk of the energy in such an outburst is appreciably shorter than the accretion (viscous) time that characterizes the flow of matter through a standard accretion disk.
منابع مشابه
Discovery of a 30 day period in the supergiant fast X - ray transient SAX J 1818 . 6 − 1703
SAX J1818.6−1703 has been characterised as a Supergiant Fast X-ray Transient system on the basis of several INTEGRAL/IBIS detections since the original BeppoSAX Wide Field Camera detection. Using IBIS/ISGRI, Swift/BAT and archival observations, we show that in fact SAX J1818.6−1703 exhibits emission on a period of 30 ± 0.1 days, with a high degree of recurrence. SAX J1818.6−1703 is therefore th...
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