Monitoring Two Quasi-Persistent X-Ray Binaries in Quiescence

Details Monitoring Two Quasi-Persistent X-Ray Binaries in Quiescence Monitoring Two Quasi-Persistent X-Ray Binaries in Quiescence

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cxo..prop.1170w&link_type=abstract

Chandra Proposal ID #04400362

Physics

Chandra Proposal Id #04400362

Scientific paper

We propose to observe the quasi-persistent neutron-star low-mass X-ray binaries KS 1731-260 and MXB 1659-298 twice in their quiescent state during cycle 4 of Chandra. These observations will strongly constrain the time evolution behavior of the quiescent properties of those systems. In the context of the cooling neutron star model for the quiescent emission in neutron star X-ray transients, our proposed observations will follow the cooling time of the crust and core of the neutron stars in those systems. Our previous Chandra and XMM-Newton observations of KS 1731-260 have already shown that the neutron star crust in KS 1731-260 cooled down rapidly, setting stringent constraints on the structure of the neutron star in this system.

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