Abstract:The physics of the supernova may provide a clue of the cosmological dark
matter. In the absence of new physics, the supernova calculations do not
explain the observed velocities of pulsars. However, if there exists a singlet
fermion with mass in the 1-20 keV range and a small mixing with neutrinos, this
particle could be emitted asymmetrically from a cooling neutron star in the
event of a supernova explosion. The asymmetry could explain the long-standing
puzzle of pulsar velocities. The same particle could be … Show more
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