Damping of neutron star pulsations by weak interaction processes

Details Damping of neutron star pulsations by weak interaction processes Damping of neutron star pulsations by weak interaction processes

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...237..187s&link_type=abstract

Astrophysical Journal, Part 1, vol. 237, Apr. 1, 1980, p. 187-197.

Astronomy and Astrophysics

Astrophysics

18

Neutron Stars, Pulsars, Stellar Evolution, Stellar Rotation, Weak Energy Interactions, Chemical Equilibrium, Damping, Dynamic Characteristics, Neutrinos, Radial Velocity, Stellar Temperature, Transient Oscillations, Trapped Particles

Scientific paper

The paper calculates the damping of the radial oscillations of a newly formed neutron star, resulting from weak interaction processes in the interior of the star. The greatest contribution to the damping comes from the lag in restoring chemical equilibrium among constituents, e(-),n,p as the density is changed. It is found that taking into account the absorption of neutrinos leads to results which are completely different from those of earlier works, which treated only neutrino emission. New results are also presented on damping in the trapped lepton era, during which the neutrinos are degenerate (the first second of the star's lifetime).

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