Physics, Structure, and Fueling of Active Galactic Nuclei
Abstract
are reviewed. The importance of photoionization by a hard spectrum containing high-energy photons, extending to the X-ray region, is emphasized. Time-variation studies plus spectral line ratios show that simple models cannot satisfy all the observational constraints, and some of the suggested more sophisticated models are briefly described. Observational and theoretical results which emphasize the importance of interactions between galaxies in refueling the accretion disks about massive black holes at their centers are reviewed,
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- August 1991
- DOI:
- 10.1086/132897
- Bibcode:
- 1991PASP..103..874O
- Keywords:
-
- Active Galactic Nuclei;
- Astrophysics;
- Galactic Structure;
- Interacting Galaxies;
- Seyfert Galaxies;
- Accretion Disks;
- Black Holes (Astronomy);
- High Energy Interactions;
- Particle Energy;
- Photoionization;
- Photons;
- Astrophysics;
- GALAXIES: SEYFERT;
- GALAXIES: NUCLEI