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Pulsar Recoil by Large-Scale Anisotropies in Supernova Explosions

L. Scheck·T. Plewa·H. -T. Janka·K. Kifonidis·E. Mueller
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Abstract

Assuming that the neutrino luminosity from the neutron star core is sufficiently high to drive supernova explosions by the neutrino-heating mechanism, we show that low-mode (l = 1, 2) convection can develop from random seed perturbations behind the shock. A slow onset of the explosion is crucial, requiring the core luminosity to vary slowly with time, in contrast to the burst-like exponential decay assumed in previous work. Gravitational and hydrodynamic forces by the globally asymmetric supernova ejecta were found to accelerate the remnant neutron star on a timescale of more than a second to velocities above 500 km/s, in agreement with observed pulsar proper motions.

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L. Scheck, T. Plewa, H. -T. Janka, K. Kifonidis, E. Mueller. 2003-11-18. Pulsar Recoil by Large-Scale Anisotropies in Supernova Explosions. https://doi.org/10.1103/physrevlett.92.011103

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