Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-01-18
Phys.Rev.C81:025802,2010
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
9 pages, 16 figures, accepted for publication in Phys. Rev. C
Scientific paper
10.1103/PhysRevC.81.025802
We study proton rich nucleosynthesis in windlike outflows from gamma-ray bursts accretion disks with the aim to determine if such outflows are a site of the vp-process. The efficacy of this vp-process depends on thermodynamic and hydrodynamic factors. We discuss the importance of the entropy of the material, the outflow rate, the initial ejection point and accretion rate of the disk. In some cases the vp-process pushes the nucleosynthesis out to A~100 and produces light p-nuclei. However, even when these nuclei are not produced, neutrino induced interactions can significantly alter the abundance pattern and cannot be neglected.
Kizivat L.-T.
Langanke Karlheinz
Martinez-Pinedo Gabriel
McLaughlin Gail C.
Surman Rebecca
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