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- W2040379569 abstract "We report on a long X-ray observation of the slow-rotating binary pulsar GX 1+4. BeppoSAX observed, in the 0.1-200 keV energy range, an event in which the source flux dropped for almost a day, and then recovered. During this event only the high-energy emission was found to be pulsed and the pulsations were shifted in phase of ~0.2 . The spectrum during the event was well fitted by a Compton-reflection model. A broad iron line at ~6.55 keV was present outside of the event, where instead two narrow emission lines at ~6.47 keV and ~7.05 keV were detected. The pulse profile was highly variable as a function of both energy and time. We interpret this low-flux event as an occultation of the direct X-ray emission, due to the increase of a torus-like accretion disk; we then discuss similarities between this source and the recently discovered highly absorbed INTEGRAL sources." @default.
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- W2040379569 date "2006-01-01" @default.
- W2040379569 modified "2023-09-26" @default.
- W2040379569 title "A puzzling event during the X-ray emission of the binary system GX 1+4" @default.
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- W2040379569 doi "https://doi.org/10.1016/j.asr.2005.04.086" @default.
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