A 160 day Period in the Be star X-ray Binary IGR J01363+6610 from Swift BAT Observations
Abstract
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.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- December 2010
- Bibcode:
- 2010ATel.3079....1C
- Keywords:
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- Binary;
- Neutron Star;
- Star;
- Transient;
- Variables