Neutrino Spectra from Accretion Disks: Neutrino General Relativistic   Effects and the Consequences for Nucleosynthesis
  Black hole accretion disks have been proposed as good candidates for a range of interesting nucleosynthesis, including the r-process. The presence of the black hole influences the neutrino fluxes and affects the nucleosynthesis resulting from the interaction of the emitted neutrinos and hot outflowing material ejected from the disk. We study the impact of general relativistic effects on the neutrinos emitted from black hole accretion disks. We present abundances obtained by considering null geodesics and energy shifts for two different disk models. We find that both the bending of the neutrino trajectories and the energy shifts have important consequences for the nucleosynthetic outcome 
O.L Caballero, G.C. McLaughlin and R. Surman
astro-ph.HE nucl-th