Astronomy and Astrophysics – Astrophysics
Scientific paper
1994-05-05
Astronomy and Astrophysics
Astrophysics
24 pages TeX, figures available on request
Scientific paper
10.1086/174842
We present the results of self-consistent models of Compton-heated accretion disk coronae. The models are calculated using a new method for computing monochromatic radiative transfer in two-dimensions. The method splits the radiation into direct and scattered components. The direct radiation is computed by calculating the optical depth along rays, while transfer of the scattered radiation is approximated by flux-limited diffusion. The resulting code agrees with more accurate treatments to within 50\%, and is highly efficient, making it practical for use in large hydrodynamic simulations. The coronal models are used to confirm the results of earlier work, and to extend it to higher luminosities. In contrast to earlier work, which found the outer disks to be shadowed by the inner corona at high luminosities, we find our results to form an almost continuous extension of the models at lower luminosities. This is due to the presence of multiply-scattered radiation, which acts to partially offset the loss of direct radiation from the central source. Although the analytic methods derived at lower luminosities cannot be used to derive the coronal structure for $L/L\sr{Edd}\gapprox0.1$, the results of the models are amenable to semiempirical fits. We also discuss possible observational consequences of the results for coronal veiling and line fluorescence from the disk.
Castor John I.
Klein Richard I.
McKee Christopher F.
Murray Stephen D.
No associations
LandOfFree
Accretion Disk Coronae in High Luminosity Systems 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 Accretion Disk Coronae in High Luminosity Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accretion Disk Coronae in High Luminosity Systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-353627