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Light Element Synthesis in High Entropy Relativistic Flows Associated with Gamma Ray Bursts

Jason Pruet·Shannon Guiles·George M. Fuller
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Abstract

We calculate and discuss the light element freeze-out nucleosynthesis in high entropy winds and fireballs for broad ranges of entropy-per-baryon, dynamic timescales characterizing relativistic expansion, and neutron-to-proton ratios. With conditions characteristic of Gamma Ray Bursts (GRBs) we find that deuterium production can be prodigious, with final abundance values 2H/H approximately 2%, depending on the fireball isospin, late time dynamics, and the effects of neutron decoupling- induced high energy non-thermal nuclear reactions. This implies that there potentially could be detectable local enhancements in the deuterium abundance associated with GRB events.

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Jason Pruet, Shannon Guiles, George M. Fuller. 2002-05-03. Light Element Synthesis in High Entropy Relativistic Flows Associated with Gamma Ray Bursts. https://doi.org/10.1086/342838

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