71 citations · 286 across the 14 of their papers we have counts for
17 papers
Multimessenger Probes of Primordial Black Holes with Gravitational Wave and 21 cm Observations
Leah Jenks
Primordial black holes (PBHs) formed from the collapse of curvature perturbations in the early universe are known to have an associated gravitational wave signal sourced by the sam…
Black Hole Quasinormal Mode Resonances and Reconnections in Coupled Systems
Leah Jenks, Hayato Motohashi, Kazufumi Takahashi +2
Black hole quasinormal modes (QNMs) provide a window into the underlying structure of black holes and the environments in which they arise. QNMs have particularly rich dynamics in…
Cosmology of Gravi-Axions
Stephon Alexander, Gregory Gabadadze, Leah Jenks +1
We show how a mass term for gravitational axions (''gravi-axions'') with a Chern-Simons coupling to gravity can naturally arise due to non-perturbative contributions from Euclidean…
Gravitational Waves in Chern-Simons-Gauss-Bonnet Gravity
Tatsuya Daniel, Leah Jenks, Stephon Alexander
It is known that the four-dimensional effective field theory arising from heterotic string theory is general relativity with both a Chern-Simons and Gauss-Bonnet term. We study the…
Birefringence tests of gravity with multi-messenger binaries
Macarena Lagos, Leah Jenks, Maximiliano Isi +7
Extensions to General Relativity (GR) allow the polarization of gravitational waves (GW) from astrophysical sources to suffer from amplitude and velocity birefringence, which respe…
A New Probe of Gravitational Parity Violation Through (Non-)Observation of the Stochastic Gravitational-Wave Background
Thomas Callister, Leah Jenks, Daniel Holz +1
Parity violation in the gravitational sector is a prediction of many theories beyond general relativity. In the propagation of gravitational waves, parity violation manifests by in…
Gamma-ray Transient Network Science Analysis Group Report
Eric Burns, Michael Coughlin, Kendall Ackley +34
The Interplanetary Network (IPN) is a detection, localization and alert system that utilizes the arrival time of transient signals in gamma-ray detectors on spacecraft separated by…
Parameterized Parity Violation in Gravitational Wave Propagation
Leah Jenks, Lyla Choi, Macarena Lagos +1
Gravitational parity violation arises in a variety of theories beyond general relativity. Gravitational waves in such theories have their propagation altered, leading to birefringe…
Towards A Direct Detection of the Spin of Dark Matter
Leah Jenks, Konstantinos Koutrolikos, Evan McDonough +2
We investigate the contribution of higher spin particles in the signal of direct detection experiments searching for dark matter. We consider a bosonic or fermionic higher spin dar…
Black Hole Superradiance in Dynamical Chern-Simons Gravity
Stephon Alexander, Gregory Gabadadze, Leah Jenks +1
Black hole superradiance provides a window into the dynamics of light scalar fields and their interactions close to a rotating black hole. Due to the rotation of the black hole, th…
The Chern-Simons Caps for Rotating Black Holes
Stephon Alexander, Gregory Gabadadze, Leah Jenks +1
We study the dynamical Chern-Simons gravity as an effective quantum field theory, and discuss a broad range of its parameter space where the theory is valid. Within that validity r…
Higher Spin Dark Matter
Stephon Alexander, Leah Jenks, Evan McDonough
Little is known about dark matter beyond the fact that it does not interact with the standard model or itself, or else does so incredibly weakly. A natural candidate, given the his…
Probing Noncommutative Gravity with Gravitational Wave and Binary Pulsar Observations
Leah Jenks, Kent Yagi, Stephon Alexander
Noncommutative gravity is a natural method of quantizing spacetime by promoting the spacetime coordinates themselves to operators which do not commute. This approach is motivated,…
Gravity waves in parity-violating Copernican Universes
Stephon Alexander, Leah Jenks, Pavel Jiroušek +2
In recent work minimal theories allowing the variation of the cosmological constant by means of a balancing torsion, have been proposed. It was found that such theories contain par…
Higher Spin Supersymmetry at the Cosmological Collider: Sculpting SUSY Rilles in the CMB
Stephon Alexander, S. James Gates, Leah Jenks +2
We study the imprint of higher spin supermultiplets on cosmological correlators, namely the non-Gaussianity of the cosmic microwave background. Supersymmetry is used as a guide to…
The June 2016 Optical and Gamma-Ray Outburst and Optical Micro-Variability of the Blazar 3C454.3
Zachary R. Weaver, Thomas J. Balonek, Svetlana G. Jorstad +17
The quasar 3C454.3 underwent a uniquely-structured multi-frequency outburst in June 2016. The blazar was observed in the optical band by several ground-based telescopes in phot…
Thick Disks in the Hubble Space Telescope Frontier Fields
Bruce G. Elmegreen, Debra Meloy Elmegreen, Brittany Tompkins +1
Thick disk evolution is studied using edge-on galaxies in two Hubble Space Telescope Frontier Field Parallels. The galaxies were separated into 72 clumpy types and 35 spiral types…