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Recent progress in understanding the hot and warm gas phases in the halos of star-forming galaxies
D. K. Strickland, T. M. Heckman, E. J. M. Colbert +2
In this contribution we present a few selected examples of how the latest generation of space-based instrumentation -- NASA's Chandra X-ray Observatory and the Far-Ultraviolet Spec…
Parsec-Scale Jets and Tori in Seyfert Galaxies
A. L. Roy, J. M. Wrobel, A. S. Wilson +6
What causes the dichotomy between very powerful and very weak radio emission from AGNs? Perhaps the engines are the same but the jets get disrupted by dense ISM in radio-quiet obje…
Slow Jets in Seyfert Galaxies: NGC 1068
A. L. Roy, A. S. Wilson, J. S. Ulvestad +1
We have used the Very Long Baseline Array at 5 GHz to image the nucleus of NGC 1068 at two epochs separated by 2.92 yr. No relative motion was detected between the high brightness-…
The variability of the Seyfert galaxy NGC 2992: the case for a revived AGN
R. Gilli, R. Maiolino, A. Marconi +4
We report the transition to an active state of the nucleus in the Seyfert 1.9 galaxy NGC 2992, discovered by means of new hard X-ray data. While the 2-10 keV flux declined by a fac…
Free-Free Absorption on Parsec Scales in Seyfert Galaxies
A. L. Roy, J. S. Ulvestad, A. S. Wilson +5
Seyfert galaxies come in two main types (types 1 and 2) and the difference is probably due to obscuration of the nucleus by a torus of dense molecular material. The inner edge of t…