Crust cooling of HETE J1900.1-2455 and Swift J1626.6-5156

Details Crust cooling of HETE J1900.1-2455 and Swift J1626.6-5156 Crust cooling of HETE J1900.1-2455 and Swift J1626.6-5156

Sep 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007cxo..prop.2366d&link_type=abstract

Chandra Proposal ID #09400351

Physics

Chandra Proposal Id #09400351

Scientific paper

We propose Chandra ToO observations of the two neutron star quasi-persistent X-ray binaries HETE J1900.1-2455 and Swift J1626.6-5156 in quiescence. Currently, both sources exhibit an outburst phase that started about 1.5 years ago. Neutron stars that undergo such a prolonged accretion period serve perfectly to study their cooling behavior, which depends sensitively on stellar parameters such as composition and compactness. We want to explore the effect of a strong magnetic field on the thermal evolution of transiently accreting neutron stars. Cooling models for neutron stars with a low magnetic field currently exist, and also magnetars are well studied. Our selected targets fall right in between this regime and can provide new physical input in the existing theory of cooling neutron stars.

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