A 160 day Period in the Be star X-ray Binary IGR J01363+6610 from Swift BAT Observations

Details A 160 day Period in the Be star X-ray Binary IGR J01363+6610 from Swift BAT Observations A 160 day Period in the Be star X-ray Binary IGR J01363+6610 from Swift BAT Observations

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.3079....1c&link_type=abstract

The Astronomer's Telegram, #3079

Mathematics

Probability

Binary, Neutron Star, Star, Transient, Variables

Scientific paper

The hard X-ray source IGR J01363+6610 has been proposed to be a Be star X-ray binary (e.g. Reig et al. 2005, A&A, 440, 637; Tomsick et al. 2010, arXiv:1012.2817v1). We have analyzed the Swift BAT 15 - 50 keV light curve of IGR J01363+6610 obtained between MJD 53,414 to 55,544 (2005-02-13 to 2010-12-14) to search for periodic modulation that could reveal the orbital period of the system. From a power spectrum we find an apparently significant peak (false alarm probability ~2E-7 for a search for periods longer than 2 days) at approximately 160 days.

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