671 citations · 4k across the 47 of their papers we have counts for
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astro-ph1998★ 2 cited
Compact X-ray Sources in Nearby Galaxy Nuclei
E. J. M. Colbert, R. F. Mushotzky
We have found compact, near-nuclear X-ray sources in 21 (54\%) of a complete sample of 39 nearby face-on spiral and elliptical galaxies with available ROSAT HRI data. ROSAT X-ray l…
astro-ph1998★ 23 cited
The Ionization Fraction in the Obscuring `Torus' of an Active Galactic Nucleus
A. S. Wilson, A. L. Roy, J. S. Ulvestad +8
In this paper, we report VLBA radio maps at three frequencies and an ASCA X-ray spectrum of the water megamaser galaxy NGC 2639, which is believed to contain an edge-on viewed accr…