A Deep Pulse Search in Eleven Low Mass X-Ray Binaries
Abstract
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.
Cite
@article{arxiv.1709.10408,
title = {A Deep Pulse Search in Eleven Low Mass X-Ray Binaries},
author = {A. Patruno and K. Wette and C. Messenger},
journal= {arXiv preprint arXiv:1709.10408},
year = {2018}
}
Comments
submitted to ApJ, 8 pages