|Evidence of X-ray periodicity in LSI+61303|
|Paredes J.M., Marti J., Percaula M., Ribo M.|
Abstract: ========= We have carried out a period analysis of 2-10 keV observations of the 26.5 d radio periodic X-ray binary LSI+61303 retrieved from the quick-look results database provided by the ASM/RXTE team. After applying different period search methods, we find evidence that X-ray outbursts in LSI+61303 are very likely to recur with the same radio o utburst period. Our best estimate of the LSI+61303 X-ray period is 26.7+/-0.2 d. The folded X-ray light curve displays a fractional change in flux by a factor of about 5 and its highest emission level overlaps with the active state of the radio emission.