Emergent Spectra from Slim Accretion Disks in Active Galactic Nuclei

Details Emergent Spectra from Slim Accretion Disks in Active Galactic Nuclei Emergent Spectra from Slim Accretion Disks in Active Galactic Nuclei

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...522..839w&link_type=abstract

The Astrophysical Journal, Volume 522, Issue 2, pp. 839-845.

Astronomy and Astrophysics

Astronomy

41

Accretion, Accretion Disks, Galaxies: Active, Galaxies: Kinematics And Dynamics

Scientific paper

Recently the vertical structure of accretion disks has received much attention because of the available comparison with observations of the big blue bump, but all the calculations are based on the standard accretion disk model. In this paper we calculate the vertical structure and the emergent spectrum based on the radial structure of slim disks from the height-averaged equations. With the alpha-prescription of energy generation, we obtain the density profile as a Gaussian distribution, then solve the energy transfer problem in the z-direction. We find that the sub-Keplerian rotation affects the density profile in the z-direction. The advection process plays significant roles in the emergent spectrum, especially for high accretion rates. We show that there are two prominent characteristics of the spectrum: the presence of a maximum frequency in the emergent spectrum, which is very weakly dependent on the accretion rate, and a flattened component. These results are beyond the scope of explanation of the standard model of accretion disks even for the model with the modified blackbody spectrum. The present model is suitable for a wide range of disk parameters.

Affiliated with

Also associated with

No associations

Rating

Emergent Spectra from Slim Accretion Disks in Active Galactic Nuclei does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Emergent Spectra from Slim Accretion Disks in Active Galactic Nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emergent Spectra from Slim Accretion Disks in Active Galactic Nuclei will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1768894