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We present the timing analysis of the intermediate polar TX Col in the X-rayband using the observations made by Chandra, Swift, and Suzaku during the years2000, 2007, and 2009, respectively. The spin, orbital, and beat periods derivedfrom these data are consistent with the earlier findings. We found that thespin modulation was dominant during the Chandra observation, whereas bothorbital and beat modulations were dominant during the Swift and Suzakuobservations. These findings and past X-ray observations indicate that TX Colis changing its accretion geometry from disc dominance to stream dominance andvice versa.

X-ray observations of the Intermediate Polar TX Col