Swift observations of the X-ray pulsar SAX J1324-6200

Astronomy and Astrophysics – Astrophysics

Scientific paper

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X-Rays: Binaries

Scientific paper

We present recent observations of the X-ray pulsar SAX J1324-6200 obtained in December 2007 with the Swift satellite, significantly improving the source localization over previous data and providing a new measurement of the spin period P=172.84 s. A single object that is consistent in colors with a highly reddened early type star is visible in the X-ray error box. The period is significantly longer than what was obtained in 1997, indicating that SAX J1324-6200 has been spinning down at an average rate of ˜6 × 10-9 s s-1. We discuss the possible nature of the source, showing that it most likely belongs to the class of low-luminosity, persistent Be/neutron star binaries.

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