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Radio Cores in Low-Luminosity AGN: ADAFs or Jets?
Heino Falcke, Neil M. Nagar, Andrew S. Wilson +2
We have surveyed two large samples of nearby low-luminosity AGN with the VLA to search for flat-spectrum radio cores, similar to Sgr A* in the Galactic Center. Roughly one third of…
The Narrow-Line Regions of LINERs as Resolved with the Hubble Space Telescope
R. W. Pogge, D. Maoz, L. C. Ho +1
LINERs exist in the nuclei of a large fraction of luminous galaxies, but their connection with the AGN phenomenon has remained elusive. We present Hubble Space Telescope narrowband…
Possible Evidence for Truncated Thin Disks in the Low-Luminosity Active Galactic Nuclei M81 and NGC 4579
Eliot Quataert, Tiziana Di Matteo, Ramesh Narayan +1
M81 and NGC 4579 are two of the few low-luminosity active galactic nuclei which have an estimated mass for the central black hole, detected hard X-ray emission, and detected optica…
Polarized Narrow-Line Emission from the Nucleus of NGC 4258
A. J. Barth, H. D. Tran, M. S. Brotherton +5
The detection of polarized continuum and line emission from the nucleus of NGC 4258 by Wilkes et al. (1995) provides an intriguing application of the unified model of Seyfert nucle…
Discovery of Radio Outbursts in the Active Nucleus of M81
Luis C. Ho, Schuyler D. Van Dyk, Guy G. Pooley +2
The low-luminosity active galactic nucleus of M81 has been monitored at centimeter wavelengths since early 1993 as a by-product of radio programs to study the radio emission from S…
X-ray Properties of the Weak Seyfert 1 Nucleus in NGC 4639
Luis C. Ho, Andrew Ptak, Yuichi Terashima +4
We obtained observations of NGC 4639 with ASCA in order to investigate its mildly active Seyfert 1 nucleus at hard X-ray energies. Koratkar et al. (1995) have previously shown that…