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

J Pruet | Zendy; S. Guiles | Zendy; George M. Fuller | Zendy

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

Author(s) -

J Pruet,

S. Guiles,

George M. Fuller

Publication year - 2002

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/342838

Subject(s) - physics , gamma ray burst , nucleosynthesis , deuterium , baryon , nuclear physics , neutron , decoupling (probability) , astrophysics , hadron , proton , gamma ray , nuclear reaction , control engineering , engineering

We calculate and discuss the light element freeze-out nucleosynthesis in highentropy winds and fireballs for broad ranges of entropy-per-baryon, dynamictimescales characterizing relativistic expansion, and neutron-to-proton ratios.With conditions characteristic of Gamma Ray Bursts (GRBs) we find thatdeuterium production can be prodigious, with final abundance values 2H/Happroximately 2%, depending on the fireball isospin, late time dynamics, andthe effects of neutron decoupling- induced high energy non-thermal nuclearreactions. This implies that there potentially could be detectable localenhancements in the deuterium abundance associated with GRB events.Comment: 14 pages 3 figure

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