Are GRMHD Mean-Field Dynamo Models of Thick Accretion Disks SANE?

The remarkable results by the Event Horizon Telescope collaboration concerning emission from M87* and, more recently, its polarization properties, require an increasingly accurate modeling of plasma flows around accreting black hole. Radiatively inefficient sources such as and Sgr A* are typically modeled with SANE (standard normal evolution) paradigm, if accretion dynamics is smooth, or MAD (magnetically arrested disk) hole’s magnetosphere reacts halting sporadically, resulting in a highly dynamical process. While recent studies seem to favor models, this may not be true for all sources, surely still deserves attention. In work, we investigate possibility reaching typical degree magnetization other properties expected disks resorting mean-field dynamo process axisymmetric GRMHD simulations, which supposed mimic amplifying action unresolved magnetorotational instability-driven turbulence. We show that it possible reproduce main diagnostics present literature starting very unfavorable initial configurations, purely toroidal magnetic field negligible magnetization.