63 citations · 163 across the 6 of their papers we have counts for
6 papers
Assessing indirect methods to determine black hole masses using NGC 4151
James K. Williams, Mario Gliozzi, Kyle A. Bockwoldt +1
Accurately determining the black hole mass () in active galactic nuclei (AGN) is crucial to constraining their properties and to studying their evolution. While dire…
Estimating black hole masses in obscured AGN using X-rays
Mario Gliozzi, James K. Williams, Dina A. Michel
Determining the black hole masses in active galactic nuclei (AGN) is of crucial importance to constrain the basic characteristics of their central engines and shed light on their g…
An Unusual Transmission Spectrum for the Sub-Saturn KELT-11b Suggestive of a Sub-Solar Water Abundance
Knicole D. Colón, Laura Kreidberg, Luis Welbanks +30
We present an optical-to-infrared transmission spectrum of the inflated sub-Saturn KELT-11b measured with the Transiting Exoplanet Survey Satellite (TESS), the Hubble Space Telesco…
The soft X-ray excess: NLS1s vs. BLS1s
M. Gliozzi, J. K. Williams
The soft X-ray excess - the excess of X-rays below 2 keV with respect to the extrapolation of the hard X-ray spectral continuum model - is a very common feature among type 1 active…
Buried Black Hole Growth in IR-selected Mergers: New Results from Chandra
Ryan W. Pfeifle, Shobita Satyapal, Nathan J. Secrest +8
Observations and theoretical simulations suggest that a significant fraction of merger-triggered accretion onto supermassive black holes is highly obscured, particularly in late-st…
Are NLS1s highly accreting low black hole mass AGNs?
James K. Williams, Mario Gliozzi, Ross V. Rudzinsky
In this work, we test the hypothesis that narrow-line Seyfert 1 galaxies (NSL1s) are active galactic nuclei in their early phase and are therefore younger and more active than the…