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- W1657367483 abstract "integral and sax observations of the neutron-star LMXB 4U~1705--44 have been analysed to deeply investigate the spectral state transitions nature. Its energy spectrum can be described as the sum of one or two blackbody, a 6.4-keV Fe line and a component due to thermal Comptonization. For the first time in this source, we find a strong signature of Compton reflection, presumably due to illumination of the optically-thick accretion disk by the Comptonized spectrum. Detection of two blackbody component in the soft states could originate in the disk and the neutron-star surface, and the Comptonized component arises from a hot inner flow with the seed photons coming from the disk and/or the neutron-star surface. The spectral transitions are shown to be associated with variations in the accretion rate, which changes in turn the temperature of the Comptonizing electrons and the strength of Compton reflection." @default.
- W1657367483 created "2016-06-24" @default.
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- W1657367483 date "2006-10-11" @default.
- W1657367483 modified "2023-09-27" @default.
- W1657367483 title "Spectral analysis of the Low-Mass X-ray Binary 4U~1705--44" @default.
- W1657367483 hasPublicationYear "2006" @default.
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