Long-duration gamma-ray bursts: SPH simulations with microphysics

Details Long-duration gamma-ray bursts: SPH simulations with microphysics Long-duration gamma-ray bursts: SPH simulations with microphysics

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ragt.meet..469t&link_type=abstract

Proceedings of RAGtime 8/9: Workshops on black holes and neutron stars, 15-19/19-21 September, 2006/2007, Hradec nad Moravicí, O

Physics

Gamma-Ray Bursts, Supernovae Ic, Collapsar, Accretion Disk, Hydrodynamic Instabilities, Toomre Criterion, Smoothed Particle Hydrodynamics, Neutrino Cooling

Scientific paper

While they occur, gamma-ray bursts are nearly as bright as the visible universe. We briefly discuss the observational constraints on the macrophysical properties of the long-duration variety, and what we infer to be the relevant microphysics for their evolution. Finally, we present simulations of the early stages of long-duration gamma-ray bursts (LGRBs), starting from a physical progenitor and using smoothed particle hydrodynamics. We show that self-gravitating disks formed around black holes during stellar core-collapse are hydrodynamically unstable to forming spiral structure which facillitates LGRB production.

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