Emergent spectra from slim accretion disks in active galactic nuclei

Recently the vertical structure of accretion disks has received much attent ion because of the available comparison with observations of the big blue b ump, but all the calculations are based on the standard accretion disk mode l. In this paper we calculate the vertical structure and the emergent spect rum based on the radial structure of slim disks from the height-averaged eq uations. With the a-prescription of energy generation, we obtain the densit y profile as a Gaussian distribution, then solve the energy transfer proble m in the z-direction. We find that the sub-Keplerian rotation affects the d ensity profile in the z-direction. The advection process plays significant roles in the emergent spectrum, especially for high accretion rates. We sho w that there are two prominent characteristics of the spectrum: the presenc e of a maximum frequency in the emergent spectrum, which is very weakly dep endent on the accretion rate, and a flattened component. These results are beyond the scope of explanation of the standard model of accretion disks ev en for the model with the modified blackbody spectrum. The present model is suitable for a wide range of disk parameters.