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- W1948924209 abstract "Supergiant fast X-ray transients (SFXTs) are a new class of high-mass X-ray binaries recently discovered with INTEGRAL. Hours-long outbursts from these sources have been observed on numerous occasions at luminosities of ∼1036–1037 erg s−1, whereas their low-level activity at ∼1032–1034 erg s−1 has not been deeply investigated yet due to the paucity of long pointed observations with high-sensitivity X-ray telescopes. Here, we report on the first long (∼32 ks) pointed XMM–Newton observation of IGR J16479−4514, a member of this new class. This observation was carried out in 2008 March, shortly after an outburst from this source, with the main goal of investigating its low-level emission and physical mechanisms that drive the source activity. Results from the timing, spectral and spatial analysis of the EPIC-PN XMM–Newton observation show that the X-ray source IGR J16479−4514 underwent an episode of sudden obscuration, possibly an X-ray eclipse by the supergiant companion. We also found evidence for a soft X-ray extended halo around the source that is most readily interpreted as due to scattering by dust along the line of sight to IGR J16479−4514. We discuss this result in the context of the gated accretion scenarios that have been proposed to interpret the behaviour of SFXT." @default.
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- W1948924209 date "2008-10-27" @default.
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- W1948924209 title "IGR J16479−4514: the first eclipsing supergiant fast X-ray transient?" @default.
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- W1948924209 doi "https://doi.org/10.1111/j.1745-3933.2008.00566.x" @default.
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