Searching for the orbital period of the ultraluminous X-ray source NGC 1313 X-2
arXiv:1109.4437 · doi:10.1111/j.1365-2966.2011.19790.x
Abstract
We analyzed the longest phase-connected photometric dataset available for NGC 1313 X-2, looking for the ~6 day modulation reported by Liu et al. (2009). The folded B band light curve shows a 6 day periodicity with a significance slightly larger than 3 sigma. The low statistical significance of this modulation, along with the lack of detection in the V band, make its identification uncertain.
8 pages, 3 figures. Accepted for publication in Monthly Notices of the Royal Astronomical Society
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