52 citations · 83 across the 4 of their papers we have counts for
4 papers
Variability of Active Galactic Nuclei from the Optical to X-ray Regions
C. Martin Gaskell, Elizabeth S. Klimek
Some progress in understanding AGN variability is reviewed. Reprocessing of X-ray radiation to produce significant amounts of longer-wavelength continua seems to be ruled out. In s…
Structure and Kinematics of the Broad-Line Region and Torus of Active Galactic Nuclei
C. Martin Gaskell, Rene W. Goosmann, Elizabeth S. Klimek
Energetics considerations imply that the broad-line region (BLR) has a high covering factor. The absence of absorption from the BLR means that the BLR has to have a flattened distr…
Accretion Disks and the Nature and Origin of AGN Continuum Variability
C. Martin Gaskell
Theory and observations of the dominant thermal continuum emission in AGNs are examined. After correction for reddening, the steady state AGN optical--UV spectral energy distributi…
Optical and X-ray Variability of AGNs
C. Martin Gaskell
I present new comparisons of AGN optical, UV, and X-ray variations. These reveal complex relationships between the different passbands that can change with time in a given object.…