884 citations · 2.1k across the 23 of their papers we have counts for
23 papers
Measuring Extragalactic Microlens Masses and Motions in Strongly Lensed Quasar Systems with Intensity Interferometry
Abigail Moran, Ken Van Tilburg
The direct measurement of masses and transverse motions of individual stars and compact objects in distant galaxies remains an outstanding challenge, leaving extragalactic stellar…
Discovering Substellar Dark Matter Halos with Astrometric Weak Lensing of Multiply Imaged Quasars
Ken Van Tilburg, David E. Kaplan
We propose time-domain astrometric weak lensing of multiply imaged quasars as a probe of substellar dark matter (DM) halos. In CDM, each macro-image's light traverses many micro…
Accretion of Primordial Black Holes in Stellar Interiors
Matteo Cantiello, Ore Gottlieb, Cameron Norton +2
We study spherical accretion onto primordial black holes (PBHs) embedded in the core of a solar-type star. We compute the radiative efficiency self-consistently for the first time…
The Life and Death of Stars That Capture Primordial Black Holes
Ore Gottlieb, Matteo Cantiello, Cameron Norton +2
Primordial black holes (PBHs) in the asteroid mass window () remain viable dark matter candidates and can be captured by stars. We develop the first globa…
Dyon Loops and Abelian Instantons
Isabel Garcia Garcia, Marius Kongsore, Ken Van Tilburg
We construct Abelian gauge field configurations that carry non-zero instanton number. Each such "Abelian instanton" is generated by a closed magnetic worldline in four-dimensional…
Orbital Dynamics of the Solar Basin
Cara Giovanetti, Robert Lasenby, Ken Van Tilburg
We study the dynamics of the solar basin -- the accumulated population of weakly-interacting particles on bound orbits in the Solar System. We focus on particles starting off on Su…
Wake forces in a background of quadratically coupled mediators
Ken Van Tilburg
Two particles can exert forces on each other when embedded in a sea of weakly-coupled particles. These "wake forces'' occur whenever the source and target particles have quadratic…
Astrometric Weak Lensing with Gaia DR3 and Future Catalogs: Searches for Dark Matter Substructure
Cristina Mondino, Andreas Tsantilas, Anna-Maria Taki +2
Small-scale dark matter structures lighter than a billion solar masses are an important probe of primordial density fluctuations and dark matter microphysics. Due to their lack of…
Extended-Path Intensity Correlation: Microarcsecond Astrometry with an Arcsecond Field of View
Marios Galanis, Ken Van Tilburg, Masha Baryakhtar +1
We develop in detail a recently proposed optical-path modification of astronomical intensity interferometers. Extended-Path Intensity Correlation (EPIC) introduces a tunable path e…
Astrometry with Extended-Path Intensity Correlation
Ken Van Tilburg, Masha Baryakhtar, Marios Galanis +1
Intensity interferometry -- the correlation of spatially separated light intensities -- has historically been an important tool for precision optical astronomical observations. How…
A Pulsar-Based Map of Galactic Acceleration
Abigail Moran, Chiara M. F. Mingarelli, Ken Van Tilburg +1
Binary pulsars can be used to probe Galactic potential gradients through calculating their line-of-sight accelerations. We present the first data release of direct line-of-sight ac…
First indirect detection constraints on axions in the Solar basin
William DeRocco, Shalma Wegsman, Brian Grefenstette +2
Axions with masses of order keV can be produced in great abundance within the Solar core. The majority of Sun-produced axions escape to infinity, but a small fraction of the flux i…
The Piezoaxionic Effect
Asimina Arvanitaki, Amalia Madden, Ken Van Tilburg
Axion dark matter (DM) constitutes an oscillating background that violates parity and time-reversal symmtries. Inside piezoelectric crystals, where parity is broken spontaneously,…
New Constraints on Dark Photon Dark Matter with Superconducting Nanowire Detectors in an Optical Haloscope
Jeff Chiles, Ilya Charaev, Robert Lasenby +9
Uncovering the nature of dark matter is one of the most important goals of particle physics. Light bosonic particles, such as the dark photon, are well-motivated candidates: they a…
Dark Photons in the Solar Basin
Robert Lasenby, Ken Van Tilburg
Production of dark photons inside the Sun forms the basis for the most sensitive probes of such particles over a wide mass range. A small fraction of dark photons is emitted into g…
Stellar Basins of Gravitationally Bound Particles
Ken Van Tilburg
A new physical phenomenon is identified: volumetric stellar emission into gravitationally bound orbits of weakly coupled particles such as axions, moduli, hidden photons, and neutr…
Resonant absorption of bosonic dark matter in molecules
Asimina Arvanitaki, Savas Dimopoulos, Ken Van Tilburg
We propose a new class of bosonic dark matter (DM) detectors based on resonant absorption onto a gas of small polyatomic molecules. Bosonic DM acts on the molecules as a narrow-ban…
Search for light scalar dark matter with atomic gravitational wave detectors
Asimina Arvanitaki, Peter W. Graham, Jason M. Hogan +2
We show that gravitational wave detectors based on a type of atom interferometry are sensitive to ultralight scalar dark matter. Such dark matter can cause temporal oscillations in…
Sound of Dark Matter: Searching for Light Scalars with Resonant-Mass Detectors
Asimina Arvanitaki, Savas Dimopoulos, Ken Van Tilburg
The fine-structure constant and the electron mass in string theory are determined by the values of scalar fields called moduli. If the dark matter takes on the form of such a light…
Searching for dilaton dark matter with atomic clocks
Asimina Arvanitaki, Junwu Huang, Ken Van Tilburg
We propose an experiment to search for ultralight scalar dark matter (DM) with dilatonic interactions. Such couplings can arise for the dilaton as well as for moduli and axion-like…
The Last Vestiges of Naturalness
Asimina Arvanitaki, Masha Baryakhtar, Xinlu Huang +2
Direct LHC bounds on colored SUSY particles now corner naturalness more than the measured value of the Higgs mass does. Bounds on the gluino are of particular importance, since it…
Supersymmetry in the shadow of photini
Masha Baryakhtar, Nathaniel Craig, Ken Van Tilburg
Additional neutral gauge fermions -- "photini" -- arise in string compactifications as superpartners of U(1) gauge fields. Unlike their vector counterparts, the photini can acquire…
Identifying Boosted Objects with N-subjettiness
Jesse Thaler, Ken Van Tilburg
We introduce a new jet shape -- N-subjettiness -- designed to identify boosted hadronically-decaying objects like electroweak bosons and top quarks. Combined with a jet invariant m…