296 citations · 977 across the 24 of their papers we have counts for
25 papers
Modeling Multi-band Active Galactic Nuclei Lightcurves Using an Self-supervised Attentive Neural Process Network
Tzuken Shen, Chengcheng Xin, Joshua Fagin +3
With the the Legacy Survey of Space and Time (LSST), observations of tens of millions of quasars are expected. We present a machine-learning framework based on an attentive neural…
Extreme AGN Variability in WISE: Powerful Flares and Candidate Tidal Disruption Events in AGN
Satya Teja Anuraag Upadhyayula, Daniel Stern, Kishalay De +7
We present first results from a systematic study of extreme mid-infrared variability of active galaxies across the -year baseline of the Wide-field Infrared Survey Explorer (W…
Orbital Migration of Interacting Stellar Mass Black Holes in Disks around Supermassive Black Holes. III. Mass Distribution of Hierarchical Mergers
Katherine L. Gonglewski, Amy Secunda, Mordecai-Mark Mac Low +3
Active galactic nucleus (AGN) disks are a promising location for the formation of binary black holes (BBHs) that will merge on relatively short timescales and be detected by LIGO-V…
Active Galactic Nucleus Tori: Potential Birthplace to Millions of Planets
Bhupendra Mishra, Wladimir Lyra, Barry McKernan +3
The outer regions of AGN disks have temperatures similar to those of circumstellar disks, permitting dust condensation. Therefore, planet formation and growth could be active in th…
McFACTS. IV. Electromagnetic Counterparts to AGN-disk-embedded Binary Black Hole Mergers
Emily McPike, Rosalba Perna, K. E. Saavik Ford +10
The accretion disks of active galactic nuclei (AGNs) are promising environments for producing binary black hole (BBH) mergers, which have been detected via gravitational waves (GWs…
Searching for electromagnetic emission in an AGN from the gravitational wave binary black hole merger candidate S230922g
Tomás Cabrera, Antonella Palmese, Lei Hu +17
We carried out long-term monitoring of the LIGO/Virgo/KAGRA binary black hole (BBH) merger candidate S230922g in search of electromagnetic emission from the interaction of the merg…
Conditions for Changing-Look AGNs from Accretion Disk-Induced Tidal Disruption Events
Yihan Wang, Matthew J. Graham, K. E. Saavik Ford +3
The phenomenon of changing-look (CL) behavior in active galactic nuclei (AGN) is characterized by dramatic changes in luminosity and/or emission line profiles over relatively short…
In-plane Tidal Disruption of Stars in Disks of Active Galactic Nuclei
Taeho Ryu, Barry McKernan, Saavik Ford +4
Stars embedded in active galactic nucleus (AGN) disks or captured by them may scatter onto the supermassive black hole (SMBH), leading to a tidal disruption event (TDE). Using the…
Tidal Disruption Events from three-body scatterings and eccentricity pumping in the disks of Active Galactic Nuclei
Chaitanya Prasad, Yihan Wang, Rosalba Perna +2
Tidal Disruption Events (TDEs) are routinely observed in quiescent galaxies, as stars from the nuclear star cluster are scattered into the loss cone of the central supermassive bla…
Latent Stochastic Differential Equations for Modeling Quasar Variability and Inferring Black Hole Properties
Joshua Fagin, Ji Won Park, Henry Best +6
Quasars are bright and unobscured active galactic nuclei (AGN) thought to be powered by the accretion of matter around supermassive black holes at the centers of galaxies. The temp…
The Near Infrared Imager and Slitless Spectrograph for the James Webb Space Telescope -- IV. Aperture Masking Interferometry
Anand Sivaramakrishnan, Peter Tuthill, James P. Lloyd +36
The James Webb Space Telescope's Near Infrared Imager and Slitless Spectrograph (JWST-NIRISS) flies a 7-hole non-redundant mask (NRM), the first such interferometer in space, opera…
A light in the dark: searching for electromagnetic counterparts to black hole-black hole mergers in LIGO/Virgo O3 with the Zwicky Transient Facility
Matthew J. Graham, Barry McKernan, K. E. Saavik Ford +11
The accretion disks of active galactic nuclei (AGN) are promising locations for the merger of compact objects detected by gravitational wave (GW) observatories. Embedded within a b…
Aligning Retrograde Nuclear Cluster Orbits with an Active Galactic Nucleus Accretion Disc
Syeda S. Nasim, Gaia Fabj, Freddy Caban +6
Stars and stellar remnants orbiting a supermassive black hole (SMBH) can interact with an active galactic nucleus (AGN) disc. Over time, prograde orbiters (inclination $i<90^{\circ…
Science with the Ultraviolet Explorer (UVEX)
S. R. Kulkarni, Fiona A. Harrison, Brian W. Grefenstette +53
UVEX is a proposed medium class Explorer mission designed to provide crucial missing capabilities that will address objectives central to a broad range of modern astrophysics. The…
Measuring the properties of active galactic nuclei disks with gravitational waves
Avi Vajpeyi, Eric Thrane, Rory Smith +2
Active galactic nuclei (AGN) are promising environments for the assembly of merging binary black hole (BBH) systems. Interest in AGNs as nurseries for merging BBH is rising followi…
Binary Black Hole Merger Rates in AGN Disks versus Nuclear Star Clusters: Loud beats Quiet
K. E. Saavik Ford, Barry McKernan
Galactic nuclei are promising sites for stellar origin black hole (BH) mergers, as part of merger hierarchies in deep potential wells. We show that binary black hole (BBH) merger r…
Multi-Messenger Astrophysics Opportunities with Stellar-Mass Binary Black Hole Mergers
K. E. Saavik Ford, Federico Fraschetti, Chris Fryer +5
The conventional view of stellar-mass binary black hole (sBBH) mergers is that there should not be enough matter present to produce a detectable electromagnetic transient. However,…
On stellar-mass black hole mergers in AGN disks detectable with LIGO
B. McKernan, K. E. S. Ford, J. Bellovary +9
Black hole mergers detectable with LIGO can occur in active galactic nucleus (AGN) disks. Here we parameterize the merger rates, the mass spectrum and the spin spectrum of black ho…
Migration Traps in Disks Around Supermassive Black Holes
Jillian Bellovary, Mordecai-Mark Mac Low, Barry McKernan +1
Accretion disks around supermassive black holes (SMBHs) in active galactic nuclei contain stars, stellar mass black holes, and other stellar remnants, which perturb the disk gas gr…
NIRISS aperture masking interferometry: an overview of science opportunities
Étienne Artigau, Anand Sivaramakrishnan, Alexandra Z. Greenbaum +9
JWST's Near-Infrared Imager and Slitless Spectrograph (NIRISS) includes an Aperture Masking Interferometry (AMI) mode designed to be used between 2.7μm and 4.8μm. At these waveleng…
AGN and quasar science with aperture masking interferometry on the James Webb Space Telescope
K. E. Saavik Ford, Barry McKernan, Anand Sivaramakrishnan +4
Due to feedback from accretion onto supermassive black holes (SMBHs), Active Galactic Nuclei (AGNs) are believed to play a key role in LambdaCDM cosmology and galaxy formation. How…
On minor black holes in galactic nuclei
Barry McKernan, K. E. Saavik Ford, Tahir Yaqoob +1
Small and intermediate mass black holes should be expected in galactic nuclei as a result of stellar evolution, minor mergers and gravitational dynamical friction. If these minor b…
A new delivery route to Galactic Nuclei: Warm halo cloud impacts
Barry McKernan, Ari Maller, K. E. Saavik Ford
We propose a new mechanism for the delivery of gas to the heart of galactic nuclei. We show that warm halo clouds must periodically impact galactic centers and potentially deliver…
Black Hole Mass, Host galaxy classification and AGN activity
Barry McKernan, K. E. Saavik Ford, Chris Reynolds
We investigate the role of host galaxy classification and black hole mass in a heterogeneous sample of 276 mostly nearby (z<0.1) X-ray and IR selected AGN. Around 90% of Seyfert 1…