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astro-ph1998
Warm Gas and Ionizing Photons in the Local Group
Philip R. Maloney, J. Bland-Hawthorn
We investigate how much warm (T \sim 10^6 K) gas may exist in a Local Group corona, and, in particular, whether such a corona could be detected indirectly through its ionizing radi…
astro-ph1998
Ionizing Photon Sources within the Local Group
Philip R. Maloney, J. Bland-Hawthorn
We review the possible sources of ionizing photons within the Local Group. Throughout most of the LG volume, the cosmic background radiation will dominate, but locally (e.g., withi…
astro-ph1998
Physical Conditions in Obscuring Tori and Molecular Accretion Disks, and Are They Really the Same Thing?
Philip R. Maloney
The nature of the obscuring material in active galactic nuclei is still uncertain. Although some sources, such as Cygnus A, show evidence for a geometrically thick ``torus'' as ori…