Break frequency of IR/UV quasar spectra
Abstract
The characteristic 'break' frequency of AGN at log(nu) = 14.5 (1mu) is well explained by assuming that the radiation originates in optically thick accretion disks, from relativistic electrons, and from dust. Numerical results are presented, along with a simple analytical discussion helpful to understand the phenomenon. Best fits to the overall IR/UV quasar spectra from the Palomar-Green survey require a high contribution from the dust and relativistic electrons.
- Publication:
-
Acta Astronomica
- Pub Date:
- 1990
- Bibcode:
- 1990AcA....40...27L
- Keywords:
-
- Active Galactic Nuclei;
- Infrared Spectra;
- Quasars;
- Ultraviolet Spectra;
- Cosmic Dust;
- Relativistic Electron Beams;
- Sky Surveys (Astronomy);
- Stellar Spectra;
- Astrophysics