1 Hz flaring in SAX J1808.4-3658: flow instabilities near the propeller stage
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| Publication date | 2009 |
| Journal | Astrophysical Journal |
| Volume | Issue number | 707 | 2 |
| Pages (from-to) | 1296-1309 |
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| Abstract | We present a simultaneous periodic and aperiodic timing study of the accreting millisecond X-ray pulsar SAX J1808.4-3658. We analyze five outbursts of the source and for the first time provide a full and systematic investigation of the enigmatic phenomenon of the 1 Hz flares observed during the final stages of some of the outbursts. We show that links between pulsations and 1 Hz flares might exist, and suggest that they are related with hydrodynamic disk instabilities that are triggered close to the disk-magnetosphere boundary layer when the system is entering the propeller regime. |
| Document type | Article |
| Note | DOI: 10.1088/0004-637X/707/2/1296; eprintid: arXiv:0904.0560 |
| Language | English |
| Published at |
https://doi.org/10.1088/0004-637X/707/2/1296
(Final published version)
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