Neutrinos and Nucleosynthesis in Gamma Ray Bursts

Conference · Sun Jan 01 00:00:00 EST 2006

OSTI ID:944592

Surman, Rebecca ^[1]; Mclaughlin, Gail C ^[2]; Hix, William Raphael ^[3]

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1. Union College
2. North Carolina State University
3. ORNL

Gamma-ray bursts, while rare, may be important contributors to galactic nucleosynthesis. Here we consider the types of nucleosynthesis that can occur as material is ejected from a gamma-ray burst accretion disk. We calculate the composition of material within the disk as it dissociates into protons and neutrons and then use a parameterized outflow model to follow nuclear recombination in the wind. From the resulting nucleosynthesis we delineate the disk and outflow conditions in which iron peak, r-process, or light p-process nuclei may form. In all cases the neutrinos have an important impact on the final abundance distributions.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 944592
• Resource Relation: Conference: International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos - IX, Geneva, Switzerland, 20060625, 20060630
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ACCRETION DISKS
ASTROPHYSICS
BLACK HOLES
IRON
NEUTRINOS
NEUTRONS
NUCLEI
NUCLEOSYNTHESIS
PRODUCTION
PROTONS
R PROCESS
RECOMBINATION
UNIVERSE