Periodicities In X-ray Binaries From Swift/BAT Observations

Details Periodicities In X-ray Binaries From Swift/BAT Observations Periodicities In X-ray Binaries From Swift/BAT Observations

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006head....9.0138c&link_type=abstract

American Astronomical Society, HEAD meeting #9, #1.38; Bulletin of the American Astronomical Society, Vol. 38, p.335

Astronomy and Astrophysics

Astronomy

1

Scientific paper

The Burst Alert Telescope (BAT) on board Swift has accumulated extensive light curves for 265 sources (not including GRBs) in the energy range 14 to 200 keV. We present here a summary of searches for periodic modulation in the flux from X-ray binaries. Our results include: determination of the orbital periods of IGR J16418-4532 and IGR J16320-4751; the disappearance of a previously known 9.6 day period in 4U 2206+54; the detection of a 5 hour period in the symbiotic X-ray binary 4U 1954+31, which might be the slowest neutron star rotation period yet discovered; and the detection of flares in the supergiant system 1E 1145.1-6141 which occur at both periastron and apastron passage with nearly equal amplitude.

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