Localizing the Neutron Star X-Ray Transient EXO 1747-214

Physics

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Chandra Proposal Id #04400390

Scientific paper

We propose to use Chandra to localize the neutron star X-ray transient EXO 1747-214 in quiescence to facilitate its identification in a deep IR image we have obtained. We plan to perform follow-up IR and optical observations to determine the source distance, the binary orbital parameters and the neutron star mass. Low column density, which is important for soft X-ray and optical observations, was a main consideration in source selection. We derive an upper limit of 8 kpc on the source distance from the X-ray burst flux observed by EXOSAT. A Chandra detection is likely since a non-detection will provide a luminosity upper limit of 6E31 erg/s, which would be unusually low for a neutron star system.

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