ON THE INNER BOUNDARY-CONDITION OF THIN KEPLERIAN ACCRETION DISKS

We introduce a new, generalized inner boundary condition for geometrically thin, Keplerian accretion disks, and describe to what extent this influences the energy distribution between boundary layer and disk. We find that the possibility of a non-negligible radial extent allows for considerably lower characteristic temperatures in the boundary layer. For the largest part of the parameter space, the boundary layers are considerably less luminous than the disks.