Nucleosynthesis in gamma-ray bursts outflows
Astrophysics
2009-11-07 v2
Abstract
It is shown that fusion of neutrons and protons to He-4 nuclei occurs in gamma-ray burst outflows in a process similar to big-bang nucleosynthesis in the early Universe. Only the surviving free neutrons can then decouple kinematically from the charged fluid so that the multi-GeV neutrino signal predicted from inelastic nuclear n-p collisions is significantly reduced. It is also argued that a sizeable fraction of ultra-high energy cosmic rays accelerated in gamma-ray bursts should be He-4 nuclei.
Cite
@article{arxiv.astro-ph/0205093,
title = {Nucleosynthesis in gamma-ray bursts outflows},
author = {M. Lemoine},
journal= {arXiv preprint arXiv:astro-ph/0205093},
year = {2009}
}
Comments
4 pages, v2: minor modifications, to appear in A&A Letters