XMM-Newton Proposal 02015901

Details XMM-Newton Proposal 02015901 XMM-Newton Proposal 02015901

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop...87z&link_type=abstract

XMM-Newton Proposal ID #02015901

Computer Science

Rx J1856.5-3754, Xmm-Newton Proposal 02015901

Scientific paper

The nature of RX J1856.5-3754, the famous nearby radio-silent compact object, remains unknown because its rotational period has not been detected. However, the numerous X-ray observations of this puzzling source have been sensitive to periods only above 20 ms. We argue that the observed X-ray and optical radiation of this source can be interpreted as thermal emission from peripheries of hot polar caps of a millisecond pulsar, whose nonthermal emission in radio and X-rays is not observable because of an unfavorable orientation of the radiation beams. To verify this hypothesis, we propose to observe this target with the EPIC-pn instrument operating in timing mode. The proposed observation will be sensitive to millisecond pulsations with a pulsed fraction as low as 3%.

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