XMM-Newton Proposal 03071701

Details XMM-Newton Proposal 03071701 XMM-Newton Proposal 03071701

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004xmm..prop..229m&link_type=abstract

XMM-Newton Proposal ID #03071701

Other

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, J1638-4725, Xmm-Newton Proposal 03071701

Scientific paper

PSR J1638-4725 is in a highly eccentric binary system with a 5-yr orbital period about a massive companion. The pulsar is undetectable in the radio for roughly 1 yr around periastron, most likely due to absorption and scattering by the dense stellar environment. During this radio-quiet phase, X-rays produced by propeller regime accretion of matter onto the neutron star magnetosphere are likely to be detectable. If such emission is detected, this binary will be the first system in which an accretion phase alternates with a radio pulsar phase. Observations of the X-ray emission close to periastron will provide an important diagnostic of the properties of the companion star and its wind. Such an opportunity will not be available for another 5 years.

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