Vertical structure of GRB accretion disks with neutrino trapping.

Astronomy and Astrophysics – Astronomy

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Scientific paper

Several types of cataclysmic events involving stellar-mass compact objects could result in the extreme, transient accretion onto a black hole widely believed to power gamma-ray bursts. We calculate the vertical structure of such thick accretion disks with a semi-analytical model which includes the effects of neutrino transport on the disk structure. We then postprocess these models with the neutrino transport module of GenASiS, a new supernova core collapse simulation code, to get a better picture of neutrino trapping, as well as energy deposition above the accretion disk.
This work was performed under the auspices of the TeraScale Supernova Initiative, funded by SciDAC grants from the DOE Office of Science High-Energy, Nuclear, and Advanced Scientific Computing Research Programs.

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