Speaker
Dr
Julian Leszek Zdunik
(Nicolaus Copernicus Astronomical Center)
Description
Deep crustal heating phenomenon plays important role in explaining some thermal properties
of accreting neutron stars. In soft X-ray transients (SXT) it is used to explain the
relatively high luminosity of neutron star during quiescence,
and in some transient X-ray sources to study the thermal relaxation from accreting
to quiescent state.
To determine the properties of a crust of accreting neutron stars
we use the model of nuclei based on Brussels-Montreal nuclear energy density functional theory
(BSk) and compare our results to the previous Compressible Liquid Drop Model (CLDM) ones.
Although the total energy release per one accreted nucleon is similar,
the location and number of the energy sources and
corresponding energy release due to the non-equilibrium nuclear reactions depend
on the specific properties of assumed model of nuclei such as a proton quantum shell
corrections included in BSk models, which are absent in CLDM calculations.
The influence of these effects on the thermal properties of accreting neutron stars is discussed.
Primary author
Dr
Julian Leszek Zdunik
(Nicolaus Copernicus Astronomical Center)
Co-authors
Dr
Anthea Francesca Fantina
(Institut d'Astronomie et d'Astrophysique, Université Libre de Bruxelles)
Dr
Nicolas Chamel
(Université Libre de Bruxelles)
Prof.
Pawel Haensel
(Nicolaus Copernicus Astronomical Center)
