Asymmetric neutrino propagation in newly born magnetized strange stars; GRB and kicks

We consider the early cooling evolution of strongly magnetized strange stars in a color–flavor-locked phase with high gap Δ≳100MeV. We demonstrate how this model may explain the main features of the gamma-ray burst phenomena and also yield a strong star kick. The mechanism is based on beaming of neutrino emission along the magnetic vortex lines. We show that for sufficiently high initial temperatures T0∼30T0∼30–60 MeV and surface magnetic fields Bs∼1015Bs∼1015–1017 G, the energy release within the narrow beam is up to 1052 erg with a magnetic field dependent timescale between 10−2 s (for a smaller magnetic field) and 10 s. The above mechanism together with the parity violation of the neutrino-producing weak interaction processes in a magnetic field allow for the strange star kick. The higher the magnetic field the larger the star kick velocity. These velocities may cover the same range as observed pulsar kick velocities.