XMM-Newton Proposal 02032501

Details XMM-Newton Proposal 02032501 XMM-Newton Proposal 02032501

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..171s&link_type=abstract

XMM-Newton Proposal ID #02032501

Computer Science

Xte J1739-302, Xmm-Newton Proposal 02032501

Scientific paper

This is a binary with repeated outbursts that are very short (approximately 1 day). Although near the Galactic center, infrared observations of its companion indicate that it is a foreground source. Its x-ray spectrum is reminiscent of x-ray pulsars, but no pulse has yet been found. The companion appears in the K band to be an O7 star, without the emission lines expected from a Be binary. The system is nearby (1-2 kpc) yet was not discovered until 1997, probably due to the anomalously short duration of its outbursts. It is therefore likely that this is the first of a new class of systems waiting to be discovered throughout the Galaxy. Newton will provide a deep search for pulsations and a sensitive spectrum of the quiescent emission.

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