[SEMINARI]: Dr. Nardi: Pulsar acceleration by asymmetric emission of sterile neutrinos

[Arcadi Santamaria]

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                              S E M I N A R I

             [Image]   Departament de Física Teòrica    [Image]
                          Universitat de València
                       Institut de Física Corpuscular
                       Universitat de València - CSIC

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         Pulsar acceleration by asymmetric emission of sterile neutrinos

                              Dr. Enrico Nardi

                       (SISSA and Univ. de Antioquia)

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                              Seminari del IFIC
                   Tuesday 18 of July of 2000 at 04:00 PM
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                                    Resum

 A convincing explanation for the observed pulsars large peculiar velocities
 is still missing. We argue that any viable particle physics solution would
  most likely involve the resonant production of a non-interacting neutrino
    $\nu_s$ of mass $m_{\nu_s}\sim 20-50\,$keV. We propose a model where
  anisotropic magnetic field configurations strongly bias the resonant spin
    flavour precession of tau antineutrinos into $\nu_s$ . The asymmetric
   emission of $\nu_s$ from the core can produce sizeable natal kicks and
  account for recoil velocities of several hundred kilometers per second.

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