activity
19972006
most citedSub-Relativistic Radio Jets and Parsec-Scale Absorption in Two Seyfert Galaxies

109 citations · 427 across the 19 of their papers we have counts for

collaborators

19 papers

astro-ph2006★ 7 cited

3D Studies of Neutral and Ionised Gas and Stars in Seyfert and Inactive Galaxies

C. G. Mundell, G. Dumas, E. Schinnerer +8

We are conducting the first systematic 3D spectroscopic imaging survey to quantify the properties of the atomic gas (HI) in a distance-limited sample of 28 Seyfert galaxies and a s…

astro-ph2004★ 1 cited

The Ionizing Source of the Nucleus of NGC1097

R. S. Nemmen, T. Storchi-Bergmann, M. Eracleous +2

We present new observations in X-ray and optical/ultraviolet of the nucleus of NGC1097, known for the abrupt appearance of broad, double-peaked Balmer lines in its spectrum in 1991…

astro-ph2004★ 1 cited

Ionization Mechanisms in Jet-Dominated Seyferts: A Detailed Case Study

D. J. Rosario, M. Whittle, J. D. Silverman +2

For the past 10 years there has been an active debate over whether fast shocks play an important role in ionizing emission line regions in Seyfert galaxies. To investigate this cla…

astro-ph2003★ 21 cited

Chandra X-ray Observations of NGC 4258: Iron Absorption Lines from the Nucleus

A. J. Young, A. S. Wilson

We report sub-arcsecond resolution X-ray imaging spectroscopy of the low luminosity active galactic nucleus of NGC 4258 and its immediate surroundings with the Chandra X-ray Observ…

astro-ph2003★ 77 cited

The X-ray nebula around the Seyfert 2 galaxy NGC4388

K. Iwasawa, A. S. Wilson, A. C. Fabian +1

We report on X-ray emission from the Seyfert 2 galaxy NGC4388 observed with the Chandra X-ray Observatory. A hard X-ray peak is found at the position of the active nucleus suggeste…

astro-ph2003★ 49 cited

A Survey for H2O Megamasers III. Monitoring Water Vapor Masers in Active Galaxies

J. A. Braatz, A. S. Wilson, C. Henkel +2

We present single-dish monitoring of the spectra of 13 extragalactic water megamasers taken over a period of 9 years and a single epoch of sensitive spectra for 7 others. Our data…