The eclipsing accreting millisecond pulsar Swift J1749.4-2807 in quiescence

Details The eclipsing accreting millisecond pulsar Swift J1749.4-2807 in quiescence The eclipsing accreting millisecond pulsar Swift J1749.4-2807 in quiescence

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010xmm..prop..197d&link_type=abstract

XMM-Newton Proposal ID #06746801

Computer Science

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Swift J1749.4-2

Scientific paper

We propose a 100-ks XMM-Newton observation of the transiently accreting neutron star Swift J1749.4-2807 during its quiescent state. The detection of coherent pulsations at a frequency of 518 Hz and X-ray eclipses recurring every 8.82 h during an outburst observed in 2010 have recently established Swift J1749.4-2807 as the first eclipsing millisecond X-ray pulsar discovered to date. This holds great promise for obtaining precise constraints on the neutron star mass. With the proposed XMM-Newton observation we aim to search for a thermal emission component in the X-ray spectrum and to constrain the properties of the X-ray eclipses in quiescence. We request an additional 10-ks Chandra pointing to obtain a sub-arcsecond position for our target that will allow for further multi-wavelength observations.

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