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À propos de : XMM-Newton observations of four high mass X-ray binaries and IGR J17348−2045        

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  • XMM-Newton observations of four high mass X-ray binaries and IGR J17348−2045
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  • We present the results of the XMM-Newton observations of five hard X-ray emitters: IGR J08262−3736, IGR J17354−3255, IGR J16328−4726, SAX J1818.6−1703, and IGR J17348−2045. The first source is a confirmed supergiant high mass X-ray binary, the following two are candidates supergiant fast X-ray transients, SAX J1818.6−1703 is a confirmed supergiant fast X-ray transient and IGR J17348−2045 is one of the still unidentified objects discovered with INTEGRAL. The XMM-Newton observations permitted the first detailed soft X-ray spectral and timing study of IGR J08262−3736 and provided further support in favor of the association of IGR J17354−3255 and IGR J16328−4726 with the supergiant fast X-ray transients. SAX J1818.6−1703 was not detected by XMM-Newton, thus supporting the idea that this source reaches its lowest X-ray luminosity ( ≃ 10 32 erg s -1) around apastron. For IGR J17348−2045 we identified for the first time the soft X-ray counterpart and proposed the association with a close-by radio object, suggestive of an extragalactic origin.
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  • aa18900-12
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  • © ESO, 2012
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  • ESO
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