Comment on "Pulsar kicks via spin-1 color superconductivity"

Abstract

In a recent paper, Phys. Rev. Lett. 94, 211101 (2005) [hep-ph/0502166], Schmitt et al. have proposed a new mechanism to explain the observed velocities of pulsars. The proposed explanation is based on anisotropic emission of neutrinos from a cooling neutron star at temperatures below 0.1 MeV, thousands of years after the supernova. However, while neutrinos are copiously produced during the first minute of the supernova explosion, at later times the neutrino emission is negligible. Therefore, the proposed mechanism is not viable.