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Fast-spinning newborn pulsars are intriguing candidate sources of ultrahighenergy cosmic rays (UHECRs). The acceleration of particles with a givencomposition in a fraction of the extragalactic pulsar population can give aconsistent explanation for the measurements of the Auger Observatory. Wecalculate the associated diffuse neutrino flux produced while particles crossthe supernova ejecta surrounding the stars. We show that in the minimal pulsarscenario that are compatible with the UHECR data, the effective optical depthto hadronuclear interactions is larger than unity at ultrahigh energies. Thus,even in the most pessimistic case, one expects energy fluxes of $\sim 0.1 - 1\,\rm EeV$ neutrinos that should be detectable with IceCube or Askaryan RadioArray within a decade.

Testing the Newborn Pulsar Origin of Ultrahigh Energy Cosmic Rays with EeV Neutrinos