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Abstract: At present, ten years after they were first discovered, ten accretingmillisecond pulsars are known. I present a study of the aperiodic X-rayvariability in three of these systems, which led to the discovery ofsimultaneous kHz quasi periodic oscillations in XTE J1807-294 and extremelystrong broadband noise at unusually low variability frequencies in IGRJ00291+5934. Furthermore, we classified SWIFT J1756.9-2508 as an atoll sourceand measured in its 2007 outburst spectral and variability properties typicalof the extreme island state. I also give detailed estimates of the totalfluence during the studied outbursts.



Autor: Manuel Linares University of Amsterdam

Fuente: https://arxiv.org/







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