activity
19992026
most citedDetermining Inclinations of Active Galactic Nuclei Via Their Narrow-Line Region Kinematics - I. Observational Results

279 citations · 847 across the 24 of their papers we have counts for

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astro-ph.CO2013★ 35 cited

A High Resolution View of the Warm Absorber in the Quasar MR2251-178

J. N. Reeves, D. Porquet, V. Braito +5

High resolution X-ray spectroscopy of the warm absorber in the nearby quasar, MR2251-178 (z = 0.06398) is presented. The observations were carried out in 2011 using the Chandra Hig…

astro-ph.CO2013★ 279 cited

Determining Inclinations of Active Galactic Nuclei Via Their Narrow-Line Region Kinematics - I. Observational Results

T. C. Fischer, D. M. Crenshaw, S. B. Kraemer +1

Active Galactic Nuclei (AGN) are axisymmetric systems to first order; their observed properties are likely strong functions of inclination with respect to our line of sight. Howeve…

astro-ph.CO2011★ 22 cited

Uncovering the Spectral Energy Distribution in Active Galaxies Using High Ionization Mid-infrared Emission Lines

M. Meléndez, S. B. Kraemer, K. A. Weaver +1

The shape of the spectral energy distribution of active galaxies in the EUV--soft X-ray band (13.6 eV to 1 keV) is uncertain because obscuration by dust and gas can hamper our view…

astro-ph.CO2010★ 65 cited

A Multi-Wavelength Study of the Nature of Type 1.8/1.9 Seyfert Galaxies

M. L. Trippe, D. M. Crenshaw, R. P. Deo +4

We focus on determining the underlying physical cause of a Seyfert galaxy's appearance as type a 1.8 or 1.9. Are these "intermediate" Seyfert types typical Seyfert 1 nuclei with re…

astro-ph.CO2010★ 16 cited

A New Radio Loudness Diagnostic for Active Galaxies: a Radio-To-Mid-Infrared Parameter

M. Meléndez, S. B. Kraemer, H. R. Schmitt

We have studied the relationship between the nuclear (high-resolution) radio emission, at 8.4 GHz (3.6 cm) and 1.4 GHz (20 cm), the [O IV] 25.89um, [Ne III] 15.56um and [Ne II] 12.…

astro-ph.CO2009★ 36 cited

Physical Conditions in the Inner Narrow Line Region of the Seyfert 2 Galaxy Markarian 573

S. B. Kraemer, M. L. Trippe, D. M. Crenshaw +3

We have examined the physical conditions within a bright emission-line knot in the inner narrow-line region (NLR) of the Seyfert 2 galaxy Mrk 573 using optical spectra and photoion…

astro-ph.CO2009★ 59 cited

Suzaku Observation of a Hard Excess in 1H 0419-577: Detection of a Compton-Thick Partial-Covering Absorber

T. J. Turner, L. Miller, S. B. Kraemer +2

We present results from a 200 ks Suzaku observation of 1H 0419-577 taken during 2007 July. The source shows a strong excess of counts above 10 keV compared to the extrapolation of…