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(gzipped) PostScript## Neutrino-pair emission in a strong magnetic field
We study the neutrino emissivity of strongly magnetized neutron
stars due to the charged and neutral current couplings of neutrinos to
baryons in strong magnetic fields. The leading order neutral current
process is the one-body neutrino-pair bremsstrahlung, which does not
have an analogue in the zero field limit. The leading order charged
current reaction is the known generalization of the direct Urca
processes to strong magnetic fields. While for superstrong magnetic
fields in excess of G the direct Urca
process dominates the one-body bremsstrahlung, we find that for fields
on the order G and temperatures a few
times K the one-body
bremsstrahlung is the dominant process. Numerical computation of the
resulting emissivity, based on a simple parametrization of the
equation of state of the
Online publication: August 17, 2000 |