Three New Long Period X-ray Pulsars Discovered in the Small Magellanic Cloud
D. J. Macomb, D. W. Fox, R. C. Lamb, T. A. Prince
Abstract
The Small Magellanic Cloud is increasingly an invaluable laboratory for studying accreting and isolated X-ray pulsars. We add to the class of compact SMC objects by reporting the discovery of three new long period X-ray pulsars detected with the Chandra X-ray Observatory. The pulsars, with periods of 152, 304 and 565 seconds, all show hard X-ray spectra over the range from 0.6 - 7.5 keV. The source positions of the three pulsars are consistent with known H-alpha emission sources, indicating they are likely to be Be type X-ray binary star systems.
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