Neutrino and axion emissivities of neutron stars from nucleon-nucleon scattering data

Details Neutrino and axion emissivities of neutron stars from nucleon-nucleon scattering data Neutrino and axion emissivities of neutron stars from nucleon-nucleon scattering data

2000-03-29

arxiv.org/abs/astro-ph/0003445v2

Phys.Lett. B499 (2001) 9-15

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures, revtex, uses epsfig.sty. Revised version has minor modifications to the text and references, as well as so

Scientific paper

10.1016/S0370-2693(00)01382-4

Neutrino and axion production in neutron stars occurs mainly as bremsstrahlung from nucleon-nucleon (NN) scattering. The energy radiated via neutrinos or axions is typically very small compared to other scales in the two-nucleon system. The rate of emission of such "soft" radiation is directly related to the on-shell NN amplitude, and thereby to the NN experimental data. This facilitates the model-independent calculation of the neutrino and axion radiation rates which is presented here. We find that the resultant rates are a factor of four below earlier estimates based on a one-pion-exchange NN amplitude.

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