Speaker
Dr
Peter Shternin
(Ioffe Institute)
Description
We calculate the rate of neutrino emission due to modified Urca processes in a nucleon core of a neutron star taking into account in-medium effects on the nuclear interaction. The nuclear interaction is described via the in-medium G-matrix calculated in the Brueckner-Hartree-Fock framework with the continuous choice of the single particle potential. The full Argonne v18 potential with addition of the Urbana IX effective three-body forces is used. We find that the in-medium effects in this model considerably modify the reaction rates, and the modification becomes stronger for the densities closer to the direct Urca threshold. The implications of the results for the neutron star cooling are discussed.
Primary author
Dr
Peter Shternin
(Ioffe Institute)
Co-author
Dr
Marcello Baldo
(INFN Sez. di Catania)
