Lyman edges in AGN accretion discs
Abstract
We show that the basic difference in the two principal approaches to predictions of the Lyman edge in an accretion disc lies in the implicit assumption about the density of the radiating gas. Independent from the details, models predict a broad range of the edge sizes, both in absorption and in emission. Observed spectra do not exhibit any strong feature at 912A but may still be consistent with an accretion disc mechanism if more advanced theory is developed.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- July 1990
- Bibcode:
- 1990MNRAS.245P...1C
- Keywords:
-
- Accretion Disks;
- Active Galactic Nuclei;
- Lyman Spectra;
- Black Holes (Astronomy);
- Quasars;
- Spectrum Analysis;
- Thermal Emission;
- Ultraviolet Radiation;
- Astrophysics