239 citations · 1.3k across the 28 of their papers we have counts for
17 papers · 1 filter
Properties of Polarized Radio Sources in the Wide Chandra Deep Field South from 2 to 4GHz
Samantha Adams, Mark Lacy, Preshanth Jagannathan +14
We present a study of the linear polarization properties of radio sources within the 10 deg Wide Chandra Deep Field South (W-CDFS) in S-band (2-4 GHz). Our W-CDFS image has an…
Predicting Quasar Counts Detectable in the LSST Survey
Guodong Li, Roberto J. Assef, W. N. Brandt +11
The Legacy Survey of Space and Time (LSST), being conducted by the Vera C. Rubin Observatory, is a wide-field multi-band survey that will revolutionize our understanding of extraga…
The Drivers of the Decline in Supermassive Black Hole Growth at
Zhibo Yu, W. N. Brandt, Fan Zou +4
It is well established that cosmic supermassive black hole (SMBH) growth peaks at , followed by a strong decline of toward the present day, w…
Central Massive Black Holes Are Not Ubiquitous in Local Low-Mass Galaxies
Fan Zou, Elena Gallo, Anil C. Seth +13
The black-hole occupation fraction () defines the fraction of galaxies that harbor central massive black holes (MBHs), irrespective of their accretion activity leve…
The Nature of an Unidentified X-ray Source in the 7 Ms Chandra Deep Field-South Catalog
Quinn P. Sullivan, Zhibo Yu, William N. Brandt +2
In the 7 Ms Chandra Deep Field-South catalog, only one source, XID 912, was highly significantly detected in X-rays but had no formally reported counterparts in the UV, optical, in…
The X-ray Link Between High Eddington Ratio Dust-Obscured Galaxies (DOGs) and Hot DOGs
Fan Zou, W. N. Brandt, Elena Gallo +2
Dust-obscured galaxies (DOGs) with extremely red optical-to-infrared colors are often associated with intense starburst and AGN activity. Studying DOGs can provide insights into th…
On the Extremely X-ray Variable Active Galactic Nuclei in the XMM-LSS Field
Zijian Zhang, Bin Luo, Linhua Jiang +3
We present a systematic investigation of extremely X-ray variable active galactic nuclei (AGNs) in the XMM-SERVS XMM-LSS region. Eight variable AGNs are i…
Photometric Selection of type 1 Quasars in the XMM-LSS Field with Machine Learning and the Disk-Corona Connection
Jian Huang, Bin Luo, W. N. Brandt +4
We present photometric selection of type 1 quasars in the XMM-Large Scale Structure (XMM-LSS) survey field with machine learning. We constructed our trai…
Investigating the Star-Formation Characteristics of Radio Active Galactic Nuclei
Bojun Zhang, Fan Zou, W. N. Brandt +5
The coevolution of supermassive black holes and their host galaxies represents a fundamental question in astrophysics. One approach to investigating this question involves comparin…
Dust-Obscured Galaxies in the XMM-SERVS Fields: Selection, Multiwavelength Characterization, and Physical Nature
Zhibo Yu, W. N. Brandt, Fan Zou +7
Dust-obscured galaxies (DOGs) are enshrouded by dust, and many are believed to host accreting supermassive black holes (SMBHs), which makes them unique objects for probing the coev…
Rare Occasions: Tidal Disruption Events Rarely Power the AGNs Observed in Dwarf Galaxies
Joanne Tan, Guang Yang, Jonelle L. Walsh +6
Tidal disruption events (TDEs) could be an important growth channel for massive black holes in dwarf galaxies. Theoretical work suggests that the observed active galactic nuclei (A…
The Cosmic Evolution of the Supermassive Black Hole Population: A Hybrid Observed Accretion and Simulated Mergers Approach
Fan Zou, W. N. Brandt, Elena Gallo +4
Supermassive black holes (SMBHs) can grow through both accretion and mergers. It is still unclear how SMBHs evolve under these two channels from high redshifts to the SMBH populati…
Investigating the Star Formation Rates of AGN Hosts Relative to the Star-Forming Main Sequence
Nathan Cristello, Fan Zou, W. N. Brandt +4
A fundamental question in galaxy and black-hole evolution remains how galaxies and their supermassive black holes have evolved together over cosmic time. Specifically, it is still…
Linking black-hole growth with host galaxies: The accretion-stellar mass relation and its cosmic evolution
G. Yang, W. N. Brandt, F. Vito +9
Previous studies suggest that the growth of supermassive black holes (SMBHs) may be fundamentally related to host-galaxy stellar mass (). To investigate this SMBH growth-$…
The deepest X-ray view of high-redshift galaxies: constraints on low-rate black-hole accretion
Fabio Vito, Roberto Gilli, Cristian Vignali +16
We exploit the 7 Ms \textit{Chandra} observations in the \chandra\,Deep Field-South (\mbox{CDF-S}), the deepest X-ray survey to date, coupled with CANDELS/GOODS-S data, to measure…
Space Telescope and Optical Reverberation Mapping Project. IV. Anomalous behavior of the broad ultraviolet emission lines in NGC 5548
M. R. Goad, K. T. Korista, G. De Rosa +99
During an intensive Hubble Space Telescope (HST) Cosmic Origins Spectrograph (COS) UV monitoring campaign of the Seyfert~1 galaxy NGC 5548 performed from 2014 February to July, the…
Near Infrared Spectra and Intrinsic Luminosities of Candidate Type II Quasars at 2 < z < 3.4
Jenny E Greene, Rachael Alexandroff, Michael A Strauss +10
We present JHK near-infrared (NIR) spectroscopy of 25 candidate Type II quasars selected from the Sloan Digital Sky Survey, using Triplespec on the Apache Point Observatory 3.5m te…