Pulsar Kicks Induced by Spin Flavor Oscillations of Neutrinos in Gravitational Fields

Details Pulsar Kicks Induced by Spin Flavor Oscillations of Neutrinos in Gravitational Fields Pulsar Kicks Induced by Spin Flavor Oscillations of Neutrinos in Gravitational Fields

2004-11-10

arxiv.org/abs/astro-ph/0411242v3

Mon.Not.Roy.Astron.Soc. 362 (2005) 867-871

Astronomy and Astrophysics

Astrophysics

8 pages, no figures. Changed content and references added

Scientific paper

10.1111/j.1365-2966.2005.09317.x

The origin of pulsar kicks is reviewed in the framework of the spin-flip conversion of neutrinos propagating in the gravitational field of a magnetized protoneutron star. We find that for a mass in rotation with angular velocity ${\bbox \omega}$, the spin connections entering in the Dirac equation give rise to the coupling term ${\bbox \omega}\cdot {\bf p}$, being ${\bf p}$ the neutrino momentum. Such a coupling can be responsible of pulsar kicks owing to the neutrino emission asymmetry generated by the relative orientation of ${\bf p}$ with respect to ${\bbox \omega}$. For our estimations, the large non standard neutrino magnetic momentum, $\mu_\nu \lesssim 10^{-11}\mu_B$, is considered.

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