XMM-Newton observations of four high mass X-ray binaries and IGR J17348-2045
| Autor: | Lucia Pavan, R. Walter, Sergio Campana, Maurizio Falanga, Stéphane Paltani, Luigi Stella, Carlo Ferrigno, Enrico Bozzo |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
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| Popis: | 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) 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. 9 pages, 9 figures. Accepted for publication in A&A |
| Databáze: | OpenAIRE |
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