## Full transport general relativistic radiation magnetohydrodynamics for nucleosynthesis in collapsars

### J. Miller, T. M. Sprouse, C. L. Fryer, B. R. Ryan, J. C. Dolence, M. Mumpower, R. Surman

Published ApJ 902 1 (2020)

We model a compact black hole-accretion disk system in the collapsar scenario with full transport, frequency dependent, general relativistic radiation magnetohydrodynamics. We examine whether or not winds from a collapsar disk can undergo rapid neutron capture (r-process) nucleosynthesis and significantly contribute to solar r-process abundances. We find the inclusion of accurate transport has significant effects on outflows, raising the electron fraction above $Y_e \sim 0.3$ and preventing third peak r-process material from being synthesized. We compare our model to semi-analytic expectations and argue that accurate neutrino transport and realistic initial and boundary conditions are required to capture the dynamics and nucleosynthetic outcome of a collapsar.

LA-UR-19-30392

## Mail

Matthew Mumpower
Los Alamos National Lab
MS B283
TA-3 Bldg 123
Los Alamos, NM 87545