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The Vertical Structure and Ultraviolet Spectrum of X-Ray Irradiated Accretion Disks in Active Galactic Nuclei
Mark W. Sincell, Julian H. Krolik
Motivated by recent work indicating that the UV continuum in AGN may be produced by reradiation of energy absorbed from X-rays irradiating an accretion disk, we present a calculati…
A Unified View of How the Study of Emission Lines Furthers our Knowledge of AGN
Julian H. Krolik
A global view is given of how emission lines have been, and may in the future, be used to enhance our understanding of AGN. Lines from the microwave to the X-ray bands all contribu…
HUT Observations of the Lyman Limit in AGN: Implications for Unified Models
G. Kriss, J. Krolik, J. Grimes +4
We observed a total of 13 low-redshift AGN with the Hopkins Ultraviolet Telescope (HUT) during the course of the Astro-1 and Astro-2 missions. Of these, 4 show intrinsic Lyman limi…
Multiwavelength observations of short time-scale variability in NGC 4151. IV. Analysis of multiwavelength continuum variability
R. A. Edelson et al
This paper combines data from the three preceding papers in order to analyze the multi-waveband variability and spectral energy distribution of the Seyfert~1 galaxy NGC~4151 during…
Self-Shielding of X-rays and Gamma-Rays in Compact Sources
Andrei F. Illarionov, Julian H. Krolik
It is generally supposed that when the "compactness" in photons above the pair-production threshold is large, few -rays can escape. We demonstrate th…
ASCA Observations of the Composite Warm Absorber in NGC 3516
G. A. Kriss, J. H. Krolik, C. Otani +11
We obtained X-ray spectra of the Seyfert 1 galaxy NGC~3516 in March 1995 using ASCA. Simultaneous far-UV observations were obtained with HUT on the Astro-2 shuttle mission. The ASC…
Far-Ultraviolet Observations of NGC 3516 using the Hopkins Ultraviolet Telescope
G. A. Kriss, B. R. Espey, J. H. Krolik +3
We observed the Seyfert 1 galaxy NGC 3516 twice during the flight of Astro-2 using the Hopkins Ultraviolet Telescope in March 1995. Simultaneous X-ray observations were performed w…