Cooling of Neutron Stars Revisited: Application of Low Energy Theorems

A. E. L. Dieperink, E. N. E. van Dalen, A. Korchin, R. Timmermans

Submitted on 20 December 2000


Cooling of neutrons stars proceeds mainly via neutrino emission; As an example we study the modified neutrino bremsstrahlung process nnnnνν¯. The radiated energy is small compared to other scales in the system. Hence one can use low-energy theorems to compute the neutrino emissivity in terms of the non-radiative process, ie the on-shell T matrix. We find that the use of the Tmatrix as compared to previous estimates based upon one pion exchange leads a substantial reduction of the predicted emissivity.


Comment: 6 pages, 2 figures. To appear in the Proceedings of "Bologna 2000: Structure of the Nucleus at the Dawn of the Century",May 29 - June 3, 2000, Bologna,Italy

Subjects: Nuclear Theory; Astrophysics