203 citations · 1.1k across the 45 of their papers we have counts for
44 papers
An Automated Probabilistic Asteroid Prediscovery Pipeline
Sage Li, Alex Geringer-Sameth, Nathan Golovich
We present an automated and probabilistic method to make prediscovery detections of near-Earth asteroids (NEAs) in archival survey images, with the goal of reducing orbital uncerta…
Multi-year stacking searches for solar system bodies
Alex Geringer-Sameth, Nathan Golovich, Keita Iwabuchi
Digital tracking detects faint solar system bodies by stacking many images along hypothesized orbits, revealing objects that are undetectable in every individual exposure. Previous…
Survey-Wide Asteroid Discovery with a High-Performance Computing Enabled Non-Linear Digital Tracking Framework
Nathan Golovich, Trevor Steil, Alex Geringer-Sameth +3
Modern astronomical surveys detect asteroids by linking together their appearances across multiple images taken over time. This approach faces limitations in detecting faint astero…
Investigating the mixing between two black hole populations in LIGO-Virgo-KAGRA GWTC-3
Ming-Feng Ho, Scott Ellis Perkins, Simeon Bird +4
We introduce a population model to analyze the mixing between hypothesised power-law and Gaussian bump black hole populations in the latest gravitational wave cat…
High-quality Extragalactic Legacy-field Monitoring (HELM) with DECam
Ming-Yang Zhuang, Qian Yang, Yue Shen +45
High-quality Extragalactic Legacy-field Monitoring (HELM) is a long-term observing program that photometrically monitors several well-studied extragalactic legacy fields with the D…
Spatially resolved microlensing timescale distributions across the Galactic bulge with the VVV survey
Zofia Kaczmarek, Peter McGill, N. Wyn Evans +5
We analyze 1602 microlensing events found in the VISTA Variables in the Via Lactea (VVV) near-infrared (NIR) survey data. We obtain spatially-resolved, efficiency-corrected timesca…
Distribution of H-alpha Emitters in Merging Galaxy Clusters
David Wittman, Dariush Imani, Rutger Hartmann Olden +1
Studies of star formation in various galaxy cluster mergers have reached apparently contradictory conclusions regarding whether mergers stimulate star formation, quench it, or have…
Disentangling the Black Hole Mass Spectrum with Photometric Microlensing Surveys
Scott Ellis Perkins, Peter McGill, William Dawson +8
From the formation mechanisms of stars and compact objects to nuclear physics, modern astronomy frequently leverages surveys to understand populations of objects to answer fundamen…
MEGASIM: Distribution and Detection of Earth Trojan Asteroids
Travis Yeager, Nathan Golovich, Kerianne Pruett
Using N-body simulation results from the MEGASIM dataset, we present spatial distributions of Earth Trojan Asteroids and assess the detectability of the population in current and n…
On the Need for a Near-Earth Object Characterization Constellation in Low-Earth Orbit
Nathan Golovich
In 2005, the United States Congress passed a bill mandating the detection, tracking, cataloguing and characterization of 90\% of the 140 meter and larger near-Earth objects (NEOs)…
Primordial Black Hole Dark Matter Simulations Using PopSyCLE
K. Pruett, W. Dawson, M. S. Medford +6
Primordial black holes (PBHs), theorized to have originated in the early universe, are speculated to be a viable form of dark matter. If they exist, they should be detectable throu…
MEGASIM: Lifetimes and Resonances of Earth Trojan Asteroids -- The Death of Primordial ETAs?
Travis Yeager, Nathan Golovich
We present an analysis of lifetimes and resonances of Earth Trojan Asteroids (ETAs) in the MEGASIM data set (Yeager & Golovich 2022). Trojan asteroids co-orbit the Sun with a plane…
A New Blind Asteroid Detection Scheme
Nathan Golovich, Noah Lifset, Robert Armstrong +3
As astronomical photometric surveys continue to tile the sky repeatedly, the potential to pushdetection thresholds to fainter limits increases; however, traditional digital-trackin…
Time-series and Phasecurve Photometry of Episodically-Active Asteroid (6478) Gault in a Quiescent State Using APO, GROWTH, P200 and ZTF
Josiah N. Purdum, Zhong-Yi Lin, Bryce T. Bolin +49
We observed Episodically Active Asteroid (6478) Gault in 2020 with multiple telescopes in Asia and North America and have found that it is no longer active after its recent outburs…
A Search for L4 Earth Trojan Asteroids Using a Novel Track-Before-Detect Multi-Epoch Pipeline
Noah Lifset, Nathan Golovich, Eric Green +2
Earth Trojan Asteroids are an important but elusive population that co-orbit with Earth at the L4 and L5 Lagrange points. There is only one known, but a large population is theoret…
Exemplary Merging Clusters: Weak-lensing and X-ray Analysis of the Double Radio Relic Merging Galaxy Clusters MACS 1752.0+4440 and ZWCL 1856.8+6616
Kyle Finner, Kim HyeongHan, M. James Jee +8
The investigation of merging galaxy clusters that exhibit radio relics is strengthening our understanding of the formation and evolution of galaxy clusters, the nature of dark matt…
A Reanalysis of Public Galactic Bulge Gravitational Microlensing Events from OGLE-III and IV
Nathan Golovich, William A. Dawson, Fran Bartolić +8
Modern surveys of gravitational microlensing events have progressed to detecting thousands per year. Surveys are capable of probing Galactic structure, stellar evolution, lens popu…
Gravitational Microlensing Event Statistics for the Zwicky Transient Facility
Michael S. Medford, Jessica R. Lu, William A. Dawson +4
Microlensing surveys have discovered thousands of events with almost all events discovered within the Galactic bulge or toward the Magellanic clouds. The Zwicky Transient Facility…
PopSyCLE: A New Population Synthesis Code for Compact Object Microlensing Events
Casey Y. Lam, Jessica R. Lu, Matthew W. Hosek +2
We present a new Milky Way microlensing simulation code, dubbed PopSyCLE (Population Synthesis for Compact object Lensing Events). PopSyCLE is the first resolved microlensing simul…
Chandra Observations of the Spectacular A3411-12 Merger Event
Felipe Andrade-Santos, Reinout J. van Weeren, Gabriella Di Gennaro +17
We present deep Chandra observations of A3411-12, a remarkable merging cluster that hosts the most compelling evidence for electron re-acceleration at cluster shocks to date. Using…
Particle re-acceleration and Faraday-complex structures in the RXC J1314.4-2515 galaxy cluster
C. Stuardi, A. Bonafede, D. Wittor +9
Radio relics are sites of electron (re)acceleration in merging galaxy clusters but the mechanism of acceleration and the topology of the magnetic field in and near relics are yet t…
Astro2020: From Stars to Compact Objects: The Initial-Final Mass Relation
Jessica R. Lu, Casey Lam, Will Dawson +5
One of the key phases of stellar evolution that remains poorly understood is stellar death. We lack a predictive model for how a star of a given mass explodes and what kind of remn…
Primordial Black Hole Microlensing: The Einstein Crossing Time Distribution
Jessica R. Lu, Casey Y. Lam, Michael Medford +2
Gravitational microlensing is one of the few means of finding primordial black holes (PBHs), if they exist. Recent LIGO detections of 30 Msun black holes have re-invigorated the se…
Dark Matter Science in the Era of LSST
Keith Bechtol, Alex Drlica-Wagner, Kevork N. Abazajian +177
Astrophysical observations currently provide the only robust, empirical measurements of dark matter. In the coming decade, astrophysical observations will guide other experimental…