Speaker
Dr
Deborah Aguilera
(Deutsches Zentrum fuer Luft- und Raumfahrt e.V., Bremen, Germany)
Description
The theoretical modeling of the thermal relaxation of the
neutron star crust in low mass X-ray binaries may be used to establish
constraints on the crust and envelope composition and transport
properties, depending on the astrophysical scenarios assumed. I will show
numerical simulations of the neutron star crust thermal evolution and
compare them with inferred surface temperatures for five sources: MXB
1659-29, KS 1731-260, EXO 0748-676, XTE J1701-462 and IGR J17480-2446. I
will also present stationary envelope models to be used as a boundary
condition for the crustal cooling models, showing how to set constraints
to the envelope composition depending on the accretion mass rate. The
evolution of MXB 1659-29, KS 1731-260 and EXO 0748-676 can be well
described within a deep crustal cooling scenario while XTE J1701-462 and
IGR J17480-2446 can only be explained with models beyond crustal cooling,
for which I will present alternative scenarios.
Author
Dr
Deborah Aguilera
(Deutsches Zentrum fuer Luft- und Raumfahrt e.V., Bremen, Germany)
