Transient outburst mechanisms in Supergiant Fast X-ray Transients |
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Authors: | Lara Sidoli |
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Institution: | INAF/IASF-Milano, Via Bassini 15, 20133 Milano, Italy |
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Abstract: | The recent discovery of a new class of recurrent and fast X-ray transient sources, the Supergiant Fast X-ray Transients, poses interesting questions on the possible mechanisms responsible for their transient X-ray emission. The association with blue supergiants, the spectral properties similar to those of accreting pulsars and the detection, in a few cases, of X-ray pulsations, confirm that these transients are High Mass X-ray Binaries. I review the different mechanisms proposed to explain their transient outbursts and the link to persistent wind accretors. I discuss the different models in light of the new observational results coming from an on-going monitoring campaign of four Supergiant Fast X-ray Transients with Swift. |
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Keywords: | X-rays Individuals: IGR J11215-5952 XTE J1739-302 IGR J17544-2619 IGR J16479-4514 AX J1841 0-0536/IGR J18410-0535 |
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