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We are reporting the discovery of X‐ray pulsations from the source AXJ1749.1‐2733 with the period of ∼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 ∼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 ≃ 2 × 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.

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