Standard and Non-Standard Plasma Neutrino Emission Revisited

Details Standard and Non-Standard Plasma Neutrino Emission Revisited Standard and Non-Standard Plasma Neutrino Emission Revisited

1993-09-10

arxiv.org/abs/astro-ph/9309014v1

Astrophys.J. 425 (1994) 222-230; Erratum-ibid. 438 (1995) 1017

Astronomy and Astrophysics

Astrophysics

LaTeX, 16 pages, 12 figures on request from authors, MPI-Ph/93-65

Scientific paper

10.1086/173978

On the basis of Braaten and Segel's representation of the electromagnetic dispersion relations in a QED plasma we check the numerical accuracy of several published analytic approximations to the plasma neutrino emission rates. As we find none of them satisfactory we derive a new analytic approximation which is accurate to within 4\%\ where the plasma process dominates. The correct emission rates in the parameter regime relevant for the red giant branch in globular clusters are larger by about $10-20$\% than those of previous stellar evolution calculations. Therefore, the core mass of red giants at the He flash is larger by about $0.005\M_\odot$ or 1\% than previously thought. Our bounds on neutrino magnetic dipole moments remain virtually unchanged.

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