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Title: |
| Neutrino Oscillation from Hidden GRB Jets |
Authors: |
| Fraija, Nissim; Moreno Méndez, Enrique |
Publication: |
| eprint arXiv:1401.4615 |
Publication Date: |
| 01/2014 |
Origin: |
| ARXIV |
Keywords: |
| Astrophysics - High Energy Astrophysical Phenomena |
Comment: |
| 5 pages, 2 figures, To appear in MAGNETIC FIELDS IN THE UNIVERSE 4 (2013). arXiv admin note: text overlap with arXiv:1401.3787 |
Bibliographic Code: |
| 2014arXiv1401.4615F |
Abstract
Collapsars are the likely progenitors of Long Gamma-Ray Burst (
lGRBs).
lGRBs have been observed to last for thousands to tens of thousands of
seconds, thus making unlikely the neutrino-driven engine as the main
mechanism for driving the jets. In this context, the Blandford-Znajek
mechanism seems likely to explain the production of rotational-axis
directed jets without the need for large accretion rates. These engines,
require magnetic fields between $10^
{12
}$ G $< B < 10^
{15
}$ G
threading the
innerdisk, Kerr-BH region to exist. We derive the neutrino
self-energy and the effective potential up to O
(1/$M_W^4$) in a
weakly
and highly magnetized GRB fireball
flow which is made up of electrons,
protons, neutrons and their anti-particles. We consider neutrino
energies of 1-100
MeV which are produced during
stellar collapse, merger
events or in the fireball itself by electron-positron annihilation,
inverse beta decay and
nucleonic bremsstrahlung processes. Many of these
neutrinos propagate through the fireball and may oscillate resonantly.
Using two-neutrino mixing we study the possibility of these
oscillations.
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