A Deep Pulse Search in Eleven Low Mass X-Ray Binaries

Patruno, A.; Wette, K.; Messenger, C.

doi:10.3847/1538-4357/aabf89

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A Deep Pulse Search in Eleven Low Mass X-Ray Binaries

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Wette, K.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Messenger, C.
Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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1709.10408.pdf
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引用

Patruno, A., Wette, K., & Messenger, C. (2018). A Deep Pulse Search in Eleven Low Mass X-Ray Binaries. Astrophysical Journal, 859(2):. doi:10.3847/1538-4357/aabf89.

引用: https://hdl.handle.net/21.11116/0000-0001-8177-7

要旨

We present a systematic coherent X-ray pulsation search in eleven low mass X-ray binaries (LMXBs). We select a relatively broad variety of LMXBs, including persistent and transient sources and spanning orbital periods between 0.3 and 17 hours. We use about 3.6 Ms of data collected by the Rossi X-Ray Timing Explorer (RXTE) and XMM-Newton and apply a semi-coherent search strategy to look for weak and persistent pulses in a wide spin frequency range. We find no evidence for X-ray pulsations in these systems and consequently set upper limits on the pulsed sinusoidal semi-amplitude between 0.14% and 0.78% for ten outbursting/persistent LMXBs and 2.9% for a quiescent system. These results suggest that weak pulsations might not form in (most) non-pulsating LMXBs.