Publications (38)
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 Nature of Luminous Quasars with Very Large C IV Equivalent Widths
Shuqi Fu, W. N. Brandt, Fan Zou +5
We report results for a complete sample of ten luminous radio-quiet quasars with large C IV equivalent widths (EW > 150 A). For 8/10 we performed Chandra snapshot observations. We…
The Host-Galaxy Properties of Type 1 Versus Type 2 Active Galactic Nuclei
Fan Zou, Guang Yang, William N. Brandt +1
The unified model of active galactic nuclei (AGNs) proposes that different AGN optical spectral types are caused by different viewing angles with respect to an obscuring 'torus'. T…
The Supermassive Black Hole in the Nearby Spiral Galaxy M81: A Robust Mass from JWST/NIRSpec Stellar Dynamics
Dieu D. Nguyen, Tuan N. Le, Michele Cappellari +9
Despite its proximity, the mass of the supermassive black hole (SMBH) in the spiral galaxy M81 (NGC~3031) has remained uncertain, with previous dynamical measurements being unrelia…
The Most Obscured AGNs in the XMM-SERVS Fields
Wei Yan, W. N. Brandt, Fan Zou +9
We perform X-ray spectral analyses to derive characteristics (e.g., column density, X-ray luminosity) of 10,200 active galactic nuclei (AGNs) in the XMM-Spitzer Extragalac…
Radio AGN Selection and Characterization in Three Deep-Drilling Fields of the Vera C. Rubin Observatory Legacy Survey of Space and Time
Shifu Zhu, William N. Brandt, Fan Zou +4
The Australia Telescope Large Area Survey (ATLAS) and the VLA survey in the XMM-LSS/VIDEO deep field provide deep ( Jybeam) and high-resolution ( 4.…
Measuring the Central Dark Mass in NGC 4258 with JWST/NIRSpec Stellar Kinematics
Dieu D. Nguyen, Hai N. Ngo, Michele Cappellari +8
We present a new stellar dynamical measurement of the supermassive black hole (SMBH) mass in the nearby spiral galaxy NGC 4258, a critical benchmark for extragalactic mass measurem…
Reform and Practice of Computer Application Technology Major Construction and Development in Higher Vocational Colleges in China -- Taking Jiangxi Vocational College of Applied Technology as An Example
Yufei Xie, Yue Liu, Fan Zou
This study takes the development path of computer application technology specialty construction in Higher Vocational Colleges under the background of high-level higher vocational s…
Photometric Redshifts in the W-CDF-S and ELAIS-S1 Fields Based on Forced Photometry from 0.36 -- 4.5 Microns
Fan Zou, Guang Yang, W. N. Brandt +10
The W-CDF-S and ELAIS-S1 fields will be two of the LSST Deep Drilling fields, but the availability of spectroscopic redshifts within these two fields is still limited on deg^2 scal…
A Tidal Disruption Event from an Intermediate-mass Black Hole Revealed by Comprehensive Multi-wavelength Observations
Jialai Wang, Mengqiu Huang, Yongquan Xue +12
Tidal disruption events (TDEs) occur when a star crosses the tidal radius of a black hole (BH) and is ripped apart, providing a powerful way to probe dormant BHs over a wide mass r…
The Advanced X-ray Imaging Satellite (AXIS) Community Science Book
Michael Koss, Nafisa Aftab, Steven W. Allen +395
The AXIS Community Science Book represents the collective effort of 592 scientists worldwide to define the transformative science enabled by the Advanced X-ray Imaging Satellite (A…
Decreasing the uncertainty of atomic clocks via real-time noise distinguish
Richang Dong, Jinda Lin, Rong Wei +5
The environmental perturbation on atoms is the key factor restricting the performance of atomic frequency standards, especially in long term scale. In this letter, we demonstrate a…
A Rare Eddington-Limited, Heavily Obscured Low-Mass Active Galactic Nucleus Likely Triggered by a Galaxy Merger
Shouyi Wang, Fan Zou, Chang-Hao Chen +7
We report a detailed analysis of GAMA 376183, a powerful, heavily obscured active galactic nucleus (AGN) hosted by a low-mass galaxy () likely ex…
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…
The Faintest, Extremely Variable X-ray Tidal Disruption Event from a Supermassive Black Hole Binary?
Mengqiu Huang, Yongquan Xue, Shuo Li +30
Tidal disruption events (TDEs), which occur when stars enter the tidal radii of supermassive black holes (SMBHs) and are subsequently torn apart by their tidal forces, represent in…
Extending the Frontier of Spatially-Resolved Supermassive Black Hole Mass Measurements to at : Simulations with ELT/MICADO High-Resolution Mass Models and HARMONI Integral-Field Stellar Kinematics
Dieu D. Nguyen, Michele Cappellari, Tinh Q. T. Le +8
Current spatially resolved kinematic measurements of supermassive black hole (SMBH) masses are largely confined to the local Universe (distances Mpc). We investigate…
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…
A Rapidly Accreting Active Galactic Nucleus Hidden in a Dust-Obscured Galaxy at
Nathan Cristello, Fan Zou, William N. Brandt +3
Dust-obscured galaxies (DOGs) containing central supermassive black holes (SMBHs) that are rapidly accreting (i.e., having high Eddington ratios, ) may represent a…
Stellar Masses and Star-Formation Rates of Galaxies and AGNs in the eFEDS GAMA09 Field
Zhibo Yu, Fan Zou, William N. Brandt
The eFEDS is a wide 140 deg field that has extensive multiwavelength coverage. To improve the utility of the existing data, we use CIGALE to fit source Spectral Energ…
A Multi-Band Forced-Photometry Catalog in the ELAIS-S1 Field
Fan Zou, W. N. Brandt, Mark Lacy +11
The ELAIS-S1 field will be an LSST Deep Drilling field, and it also has extensive multiwavelength coverage. To improve the utility of the existing data, we use The Tractor to perfo…
Chandra reveals a luminous Compton-thick QSO powering a blob in a starbursting protocluster
Fabio Vito, William Nielsen Brandt, Bret Darby Lehmer +7
Galaxy clusters in the local universe descend from high-redshift overdense regions known as protoclusters. The large gas reservoirs and high rate of galaxy interaction in protoclus…
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…
Deep learning piston aberration control of fiber laser phased array by spiral phase modulation
Jing Zuo, Haolong Jia, Chao Geng +7
The stochastic parallel gradient descent (SPGD) algorithm is usually employed as the control strategy for phase-locking in fiber laser phased array systems. However, the convergenc…
Enhancing Optical Performance of Liquid Crystal Lens Arrays via Electrode Design Optimization
Rui Ding, Li-Lan Tian, Yi Zheng +5
A liquid crystal (LC) lens array based on double-layer composite electrodes, characterized by a large aperture, short focal length, and low operating voltage is demonstrated. The l…
Gone with the Wind: JWST-MIRI Unveils a Strong Outflow from the Quiescent Stellar-Mass Black Hole A0620-00
Zihao Zuo, Gabriele Cugno, Joseph Michail +15
We present new observations of the black hole X-ray binary A0620-00 using the Mid-Infrared Instrument on the James Webb Space Telescope, during a state where the X-ray luminosity i…
Investigation of Stellar Kinematics and Ionized gas Outflows in Local (U)LIRGs
Ashraf Ayubinia, Yongquan Xue, Huynh Anh Nguyen Le +4
We explore properties of stellar kinematics and ionized gas in a sample of 1106 local (U)LIRGs from the AKARI telescope. We combine data from $Wide-field\ Infrared\ Survey\ Explore…
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…
Revisiting the Claim for a Direct-Collapse Black Hole in UHZ1 at
Fan Zou, Elena Gallo, Zihao Zuo +7
We reassess the direct collapse black hole (DCBH) interpretation of UHZ1 (UNCOVER-26185), a gravitationally lensed galaxy at . That interpretation rests on…
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…
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…
Scalable and Robust Multiband Modeling of AGN Light Curves in Rubin-LSST
Weixiang Yu, John J. Ruan, Colin J. Burke +22
The Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) will monitor tens of millions of active galactic nuclei (AGNs) for a period of 10 years with an average caden…
Numerical Insights into noise amplification of high-energy mid-infrared supercontinuum generation in normal dispersion multimode fibers
Chaofan Yang, Dian Duan, Fan Zou +4
We report on the noise properties of high-energy mid-infrared supercontinuum (MIR-SC) generation in normal dispersion multimode fibers from the numerical perspective. Noise amplifi…
X-ray properties of dust-obscured galaxies with broad optical/UV emission lines
Fan Zou, William N. Brandt, Fabio Vito +4
Dust-obscured galaxies (DOGs) with extreme infrared luminosities may represent a key phase in the co-evolution of galaxies and supermassive black holes. We select 12 DOGs at $0.3\l…
The Remarkable X-ray Spectra and Variability of the Ultraluminous Weak-Line Quasar SDSS J1521+5202
Shouyi Wang, W. Niel Brandt, Bin Luo +4
We present a focused X-ray and multiwavelength study of the ultraluminous weak-line quasar (WLQ) SDSS J1521+5202, one of the few X-ray weak WLQs that is amenable to basic X-ray spe…
Mapping the Growth of Supermassive Black Holes as a Function of Galaxy Stellar Mass and Redshift
Fan Zou, Zhibo Yu, W. N. Brandt +3
The growth of supermassive black holes is strongly linked to their galaxies. It has been shown that the population mean black-hole accretion rate () prima…
Identification and Characterization of a Large Sample of Distant Active Dwarf Galaxies in XMM-SERVS
Fan Zou, W. N. Brandt, Qingling Ni +10
Active dwarf galaxies are important because they contribute to the evolution of dwarf galaxies and can reveal their hosted massive black holes. However, the sample size of such sou…
Spectral Energy Distributions in Three Deep-Drilling Fields of the Vera C. Rubin Observatory Legacy Survey of Space and Time: Source Classification and Galaxy Properties
Fan Zou, W. N. Brandt, Chien-Ting Chen +9
W-CDF-S, ELAIS-S1, and XMM-LSS will be three Deep-Drilling Fields (DDFs) of the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST), but their extensive multi-waveleng…