100 citations · 418 across the 16 of their papers we have counts for
16 papers
A High Fraction of Heavily X-ray Obscured Active Galactic Nuclei
Christopher M. Carroll, Tonima T. Ananna, Ryan C. Hickox +5
We present new estimates on the fraction of heavily X-ray obscured, Compton-thick (CT) active galactic nuclei (AGNs) out to a redshift of 0.8. From a sample of 540 AGNs se…
The Young Supernova Experiment Data Release 1 (YSE DR1): Light Curves and Photometric Classification of 1975 Supernovae
P. D. Aleo, K. Malanchev, S. Sharief +80
We present the Young Supernova Experiment Data Release 1 (YSE DR1), comprised of processed multi-color Pan-STARRS1 (PS1) griz and Zwicky Transient Facility (ZTF) gr photometry of 1…
A fast rising tidal disruption event from a candidate intermediate mass black hole
C. R. Angus, V. F. Baldassare, B. Mockler +36
Massive black holes (BHs) at the centres of massive galaxies are ubiquitous. The population of BHs within dwarf galaxies, on the other hand, is evasive. Dwarf galaxies are thought…
Variable AGN in the GALEX Time Domain Survey
Erik J. Wasleske, Vivienne F. Baldassare, Christopher M. Carroll
We searched the Northern Hemisphere Fields of the GALEX Time-Domain Survey (TDS) for galaxies with UV variability indicative of active galactic nuclei (AGNs). We identified 48 high…
Where Do Obscured AGN Fit in A Galaxy's Timeline?
Cassandra Hatcher, Allison Kirkpatrick, Francesca Fornasini +7
Many X-ray bright active galactic nuclei (AGN) are predicted to follow an extended stage of obscured black hole growth. In support of this picture we examine the X-ray undetected A…
A Large Population of Luminous Active Galactic Nuclei Lacking X-ray Detections: Evidence for Heavy Obscuration?
Christopher M. Carroll, Ryan C. Hickox, Alberto Masini +5
We present a large sample of infrared-luminous candidate active galactic nuclei (AGNs) that lack X-ray detections in Chandra, XMM-Newton, and NuSTAR fields. We selected all optical…
The Dust-to-Gas Ratio and the Role of Radiation Pressure in Luminous, Obscured Quasars
Hyunsung D. Jun, Roberto J. Assef, Christopher M. Carroll +5
The absence of high Eddington ratio, obscured Active Galactic Nuclei (AGN) in local () samples of moderate luminosity AGN has generally been explained to result from…
The Chandra Deep Wide-Field Survey: A New Chandra Legacy Survey in the Boötes Field I. X-ray Point Source Catalog, Number Counts and Multi-Wavelength Counterparts
A. Masini, R. C. Hickox, C. M. Carroll +30
We present a new, ambitious survey performed with the Chandra X-ray Observatory of the 9.3 deg Boötes field of the NOAO Deep Wide-Field Survey. The wide field probes a statisti…
NuSTAR and Keck Observations of Heavily Obscured Quasars Selected by WISE
Wei Yan, Ryan C. Hickox, Kevin N. Hainline +15
A primary aim of the Nuclear Spectroscopic Telescope Array (NuSTAR) mission is to find and characterize heavily obscured Active Galactic Nuclei (AGNs). Based on mid-infrared photom…
The NuSTAR Extragalactic Surveys: unveiling rare, buried AGNs and detecting the contributors to the peak of the Cosmic X-ray Background
Alberto Masini, Andrea Comastri, Francesca Civano +7
We report on the results of active galactic nuclei (AGNs) detection by NuSTAR performed in three extragalactic survey fields (COSMOS, UDS, ECDFS) in three hard bands, namely H1 (8-…
The [OIII] profiles of infrared-selected active galactic nuclei: More powerful outflows in the obscured population
M. A. DiPompeo, R. C. Hickox, C. M. Carroll +3
We explore the kinematics of ionized gas via the [O III] 5007 emission lines in active galactic nuclei (AGN) selected on the basis of their mid-infrared (IR) emission, and split…
Characterizing the WISE-selected Heavily Obscured Quasar Population with Optical Spectroscopy from the Southern African Large Telescope
R. E. Hviding, R. C. Hickox, K. N. Hainline +4
We present the results of an optical spectroscopic survey of 46 heavily obscured quasar candidates. Objects are selected using their mid-infrared (mid-IR) colours and magnitudes fr…
Multi-epoch Spectroscopy of Dwarf Galaxies with AGN Signatures: Identifying Sources with Persistent Broad H-alpha Emission
Vivienne F. Baldassare, Amy E. Reines, Elena Gallo +6
We use time-domain optical spectroscopy to distinguish between broad emission lines powered by accreting black holes (BHs) or stellar processes (i.e., supernovae) for 16 galaxies i…
A Tale of Two Narrow-Line Regions: Ionization, Kinematics, and Spectral Energy Distributions for a Local Pair of Merging Obscured Active Galaxies
Kevin N. Hainline, Ryan C. Hickox, Chien-Ting Chen +4
We explore the gas ionization and kinematics, as well as the optical--IR spectral energy distributions for UGC 11185, a nearby pair of merging galaxies hosting obscured active gala…
Improving the LSST dithering pattern and cadence for dark energy studies
Christopher M. Carroll, Eric Gawiser, Peter L. Kurczynski +8
The Large Synoptic Survey Telescope (LSST) will explore the entire southern sky over 10 years starting in 2022 with unprecedented depth and time sampling in six filters, .…
A Spectroscopic Survey of WISE-selected Obscured Quasars with the Southern African Large Telescope
Kevin N. Hainline, Ryan C. Hickox, Christopher M. Carroll +3
We present the results of an optical spectroscopic survey of a sample of 40 candidate obscured quasars identified on the basis of their mid-infrared emission detected by the Wide-F…