- Statistical Detection of Dark Matter Substructure
- Cosmological Implications of Dark Photons
- Indirect Searches for Dark Matter
Statistical Detection of Dark Matter Substructure
The distribution of matter on small scales contains a wealth of information about the underlying particle physics and nature of dark matter. A common theme in my research has been leveraging the collective, statistical effect of a large number of small dark matter structures—subhalos—in various astrophysical systems in order to extract this information.
- The Power of HalometryPhys. Rev. D, 2020
- Mining for Dark Matter Substructure: Inferring subhalo population properties from strong lenses with machine learningAstrophys. J., 2019
Cosmological Implications of Dark Photons
The existence of dark photons—a well-motivated extension of the Standard Model of particle physics—would leave a characteristic imprint in current and upcoming cosmological observations. I have recently explored new ways to look for signatures of dark photons in measurements of the Cosmic Microwave Background and the 21-cm line emission intensity.
- Edges and Endpoints in 21-cm Observations from Resonant Photon ProductionarXiv preprint, 2020
- Modeling Dark Photon Oscillations in Our Inhomogeneous UniversePhys. Rev. D, 2020
- Dark Photon Oscillations in Our Inhomogeneous UniversePhys. Rev. Lett., 2020
Indirect Searches for Dark Matter
Signatures of non-minimal interaction between the standard and dark sectors can show up in a variety of astrophysical systems, with Weakly Interacting Massive Particle (WIMP) dark matter in particular producing observable signals in gamma rays. I am interested in developing new methods and search strategies to look for such signatures in gamma-ray data, using targets both in the Milky Way and beyond.
- Semi-parametric γ-ray modeling with Gaussian processes and variational inferenceMachine Learning and the Physical Sciences Workshop at NeurIPS 2020, 2020
- Harnessing the Population Statistics of Subhalos to Search for Annihilating Dark MatterAstrophys. J., 2020
- Foreground Mismodeling and the Point Source Explanation of the Fermi Galactic Center ExcessPhys. Rev. D, 2020
- Characterizing the nature of the unresolved point sources in the Galactic Center: An assessment of systematic uncertaintiesPhys. Rev. D, 2020
- Search for dark matter annihilation in the Milky Way haloPhys. Rev. D, 2018
- Mapping Extragalactic Dark Matter Annihilation with Galaxy Surveys: A Systematic Study of Stacked Group SearchesPhys. Rev. D, 2018
- Search for Dark Matter Annihilation in Galaxy GroupsPhys. Rev. Lett., 2018
- NPTFit: A code package for Non-Poissonian Template FittingAstron. J., 2017