Discovery of X-ray Pulsations from the HMXB Source AXJ1749.1-2733

Abstract

We are reporting a discovery of X-ray pulsations from the source AX J1749.1-2733 with the period of ~132 s based on the XMM-Newton data obtained in March 2007. The observed pulse profile has a double-peaked structure with the pulse fraction of about 25-30 % 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 Sept. 9, 2003 in the 20-50 keV energy band. Due to the double-peaked pulse profile, there is an additional peak on both periodograms of nearly ~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 ($N_H\simeq 2\times 10^{23}$ cm${}^{-2}$) due to a strong intrinsic absorption in the binary system that leads to the conclusion that AX J1749.1-2733 is a new transient X-ray pulsar in the high mass X-ray binary system.

arXiv commentMNRAS, 6 pages, 6 figures

References in corpus (10)

• ISGRI: the INTEGRAL Soft Gamma-Ray Imager
• Observations of Accreting Pulsars
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Cited by in corpus (10)

• High-Mass X-ray Binaries in the Milky Way: A closer look with INTEGRAL
• Advances in Understanding High-Mass X-ray Binaries with INTEGRAL and Future Directions
• XMM-Newton discovery of transient X-ray pulsar in NGC 1313
• Constraining compactness and magnetic field geometry of X-ray pulsars from the statistics of their pulse profiles
• AX J1749.1-2733 and AX J1749.2-2725 - the close pair of X-ray pulsars behind the Galactic Center: an optical identification
• Catalog of the Galactic population of X-ray pulsars in High-mass X-ray binary systems
• INTEGRAL/IBIS observations of a hard X-ray outburst in high mass X-ray binary 4U 2206+54
• XTE J1901+014 - the First Low-Mass Fast X-ray Transient?
• Periodicity from X-ray sources within the inner Galactic disk
• Retrograde wind accretion -- an alternative mechanism for long spin-period of SFXTs