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[102.12] Buried Binaries: Supergiants Feeding X-ray Pulsars?

D.J. Helfand, E.V. Gotthelf, J.P. Halpern (Columbia University)

An XMM observation of the shell-like Galactic radio source G24.3+0.0 has revealed a bright, 113-second X-ray pulsar coincident with a highly reddened star with R-K>15. The object has a K-magnitude of 6.55, and is also detected in the MSX survey at 20\muJy. The X-ray source has an absorbing column density of nearly 10²³cm^-2 and is highly variable. We explore models for this source and discuss its relationship to a number of other recently discovered pulsars which show similar highly absorbed and luminous companions.

This work is supported in part under a grant from the NASA XMM Guest Observer Program.

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Bulletin of the American Astronomical Society, 36 5
© 2004. The American Astronomical Society.