| Authors |
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| Publication date |
2011
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| Journal |
Astrophysical Journal Letters
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| Volume | Issue number |
738
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| Number of pages |
5
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| Organisations |
-
Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
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| Abstract |
In this Letter we present a new analysis of the torques acting on the accreting millisecond X-ray pulsars SAX J1808.4-3658 and XTE J1814-338, and show how our results can be used to constrain theoretical models of the spin evolution. In particular, we find upper limits on any spin-up/down phase of XTE J1814-338 of at 95% confidence level. We examine the possibility that a gravitational wave torque may be acting in these systems and suggest that a more likely scenario is that both systems are close to spin equilibrium, as set by the disk/magnetosphere interaction.
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| Document type |
Article
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| Language |
English
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| Published at |
https://doi.org/10.1088/2041-8205/738/1/L14
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