140 citations · 212 across the 19 of their papers we have counts for
20 papers
Predictions of the Nancy Grace Roman Space Telescope Galactic Exoplanet Survey. IV. Lens Mass and Distance Measurements
Sean K. Terry, Etienne Bachelet, Farzaneh Zohrabi +54
As part of the Galactic Bulge Time Domain Survey (GBTDS), the Nancy Grace Roman Galactic Exoplanet Survey (RGES) will use microlensing to discover cold outer planets and free-float…
Hints of an Anomalous Lens Population towards the Galactic Bulge
Scott E. Perkins, Peter McGill, William A. Dawson +4
The dark and dynamic parts of the Galaxy, including the bulk shape and movement of the Galactic Bulge and characteristics of dark compact object populations, such as a hypothetical…
The La Silla Schmidt Southern Survey
Adam A. Miller, Natasha S. Abrams, Greg Aldering +75
We present the La Silla Schmidt Southern Survey (LS4), a new wide-field, time-domain survey to be conducted with the 1 m ESO Schmidt telescope. The 268 megapixel LS4 camera mosaics…
Assessing the Impact of Binary Systems on Microlensing Using SPISEA and PopSyCLE Population Simulations
Natasha S. Abrams, Jessica R. Lu, Casey Y. Lam +3
Gravitational microlensing provides a unique opportunity to probe the mass distribution of stars, black holes, and other objects in the Milky Way. Population simulations are necess…
On Finding Black Holes in Photometric Microlensing Surveys
Zofia Kaczmarek, Peter McGill, Scott E. Perkins +5
There are expected to be millions of isolated black holes in the Galaxy resulting from the death of massive stars. Measuring the abundance and properties of this remnant population…
Synergies between Roman Galactic Plane Survey and other major surveys
Katarzyna Kruszyńska, Rachel A. Street, Steven Gough-Kelly +15
Nancy Grace Roman Space Telescope will revolutionize our understanding of the Galactic Bulge with its Galactic Bulge Time Domain survey. At the same time, Rubin Observatories's Leg…
Astrometric Microlensing by Primordial Black Holes with The Roman Space Telescope
James Fardeen, Peter McGill, Scott E. Perkins +5
Primordial Black Holes (PBHs) could explain some fraction of dark matter and shed light on many areas of early-universe physics. Despite over half a century of research interest, a…
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…
Microlensing Discovery and Characterization Efficiency in the Vera C. Rubin Legacy Survey of Space and Time
Natasha S. Abrams, Markus P. G. Hundertmark, Somayeh Khakpash +11
The Vera C. Rubin Legacy Survey of Space and Time will discover thousands of microlensing events across the Milky Way Galaxy, allowing for the study of populations of exoplanets, s…
A hidden population of massive white dwarfs: two spotted K+WD binaries
D. M. Rowan, T. Jayasinghe, M. A. Tucker +10
The identification and characterization of massive () white dwarfs is challenging in part due to their low luminosity. Here we present two candidate single-lin…
Roman CCS White Paper: Characterizing the Galactic population of isolated black holes
Casey Y. Lam, Natasha Abrams, Jeff Andrews +34
Although there are estimated to be 100 million isolated black holes (BHs) in the Milky Way, only one has been found so far, resulting in significant uncertainty about their propert…
Maximizing science return by coordinating the survey strategies of Roman with Rubin, and other major facilities
R. A. Street, S. Gough-Kelly, C. Lam +13
[Abridged] The Nancy Grace Roman Space Telescope will be one of several flagship survey facilities operating over the next decade starting 2025. The deep near-IR imaging that…
The Galactic Center with Roman
Sean K. Terry, Matthew W. Hosek, Jessica R. Lu +31
We advocate for a Galactic center (GC) field to be added to the Galactic Bulge Time Domain Survey (GBTDS). The new field would yield high-cadence photometric and astrometric measur…
LSST Survey Strategy in the Galactic Plane and Magellanic Clouds
R. A. Street, X. Li, S. Khakpash +16
Galactic science encompasses a wide range of subjects in the study of the Milky Way and Magellanic Clouds, from Young Stellar Objects to X-ray Binaries. Mapping these populations,…
The Impact of Initial-Final Mass Relations on Black Hole Microlensing
Sam Rose, Casey Y. Lam, Jessica R. Lu +5
Uncertainty in the initial-final mass relation (IFMR) has long been a problem in understanding the final stages of massive star evolution. One of the major challenges of constraini…
An isolated mass gap black hole or neutron star detected with astrometric microlensing
Casey Y. Lam, Jessica R. Lu, Andrzej Udalski +42
We present the analysis of five black hole candidates identified from gravitational microlensing surveys. Hubble Space Telescope astrometric data and densely sampled lightcurves fr…
60 Microlensing Events from the Three Years of Zwicky Transient Facility Phase One
Michael S. Medford, Natasha S. Abrams, Jessica R. Lu +2
Microlensing events have historically been discovered throughout the Galactic bulge and plane by surveys designed solely for that purpose. We conduct the first multi-year search fo…
Disentangling the AGN and Star-Formation Contributions to the Radio-X-ray Emission of Radio-Loud Quasars at 1<z<2
Mojegan Azadi, Belinda Wilkes, Joanna Kuraszkiewicz +12
We constrain the emission mechanisms responsible for the prodigious electromagnetic output generated by active galactic nuclei (AGN) and their host galaxies with a novel state-of-t…
Hunting gravitational wave black holes with microlensing
Natasha S. Abrams, Masahiro Takada
Gravitational microlensing is a powerful tool to search for a population of invisible black holes (BHs) in the Milky Way (MW), including isolated BHs and binary BHs at wide orbits…
Measured Lightcurves and Rotational Periods of 3122 Florence, 3830 Trelleborg, and (131077) 2000 YH105
Natasha S. Abrams, Allyson Bieryla, Sebastian Gomez +4
We determined the rotational periods of 3122 Florence, 3830 Trelleborg, and (131077) 2000 YH105 with the Harvard Clay Telescope and KeplerCam at the Fred L. Whipple Observatory. We…