Discovery of X-ray pulsations from the HMXB source AXJ1749.1-2733

We are reporting the discovery of X-ray pulsations from the source AXJ1749.1- 2733 with the period of similar to 132 s based on the XMM - Newton data obtained in 2007 March. The observed pulse profile has a double- peaked structure with the pulse fraction of about 25 - 30 per cent in the 3 - 10 keV energy band. We have also found that a periodicity with practically the same period has been detected from the source by the IBIS telescope onboard the INTEGRAL observatory during an outburst on 2003 September 9 in the 20 - 50 keV energy band. Due to the double-peaked pulse profile, there is an additional peak on both periodograms of similar to 66 s; therefore we have also investigated the possibility that the last value is the true pulse period. The source spectrum obtained by the XMM - Newton observatory in the soft energy band is being heavily absorbed ( N-H similar or equal to 2 x 10(23) cm(-2)) due to a strong intrinsic absorption in the binary system that leads to the conclusion that AXJ1749.1- 2733 is a new transient X-ray pulsar in the high-mass X-ray binary system.