Monte Carlo Neutrino Transport in Accretion Disks

Sherwood Richers, California Institute of Technology

The merger of two neutron stars or a neutron star and a black hole are the prime candidate models for short-duration gamma ray bursts and production of r-process elements. Neutrinos can carry away energy and change the lepton number fraction, in turn affecting the appearance and dynamics of the burst, as well influencing as the types of elements formed from the outflow. We simulate the transport of neutrinos through the accretion disk surrounding the post-merger black hole using the Monte Carlo transport code SEDONA in conjunction with neutrino physics provided by NuLib to explore the influence of neutrinos on the disk composition and temperature profile.

Abstract Author(s): Sherwood Richers, Dan Kasen, Evan O'Connor