TESTING CONVERGENCE FOR GLOBAL ACCRETION DISKS
TESTING CONVERGENCE FOR GLOBAL ACCRETION DISKS
Global disk simulations provide a powerful tool for investigating accretion and the underlying magnetohydrodynamic turbulence driven by magneto-rotational instability (MRI). Using them to accurately predict quantities such as stress, accretion rate, and surface brightness profile requires that purely numerical effects, arising from both resolution and algorithm, be understood and controlled. …