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Astron. Astrophys. 326, 995-1000 (1997)

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On pulsar velocities from neutrino oscillations

Michael Birkel and Ramon Toldrà *

Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP, UK

Received 2 May 1997 / Accepted 27 May 1997

Abstract

It has been recently suggested that magnetically affected neutrino oscillations inside a cooling protoneutron star, created in a supernova explosion, could explain the large proper motion of pulsars. We investigate whether this hypothesis is in agreement with the observed properties of pulsars and find that present data disfavor the suggested mechanism. The relevance of our results for other models proposed to understand the origin of pulsar velocities is also discussed.

Key words: elementary particles - pulsars: general - supernovae: general

* On leave from Grup de Fsica Teòrica and IFAE, Universitat Autònoma de Barcelona, Catalonia, Spain.

Send offprint requests to: R. Toldrà

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© European Southern Observatory (ESO) 1997

Online publication: April 8, 1998
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