Directs the Wisconsin IceCube Particle Astrophysics Center (WIPAC); works on IceCube and next-generation neutrino telescope instrumentation for high-energy astroparticle physics.
Astroparticle physicist and long-time IceCube collaborator, working on high-energy neutrino detection instrumentation and analysis at the South Pole.
Astroparticle physicist searching for sources of ultrahigh-energy cosmic particles with IceCube and developing next-generation astroparticle/neutrino detector instrumentation.
Astroparticle physicist working on IceCube and the HAWC gamma-ray observatory, developing detector instrumentation and analysis methods for very-high-energy astrophysics.
Builds radio and mm-wave quantum-limited sensing instruments for high-energy astrophysics and cosmology. Directions: (1) PUEO — balloon-borne radio Cherenkov (Askaryan) detector for ultra-high-energy cosmogenic neutrinos; (2) RNO-G — ground-based radio neutrino array at Summit Station, Greenland; (3) UHE cosmic ray radio detection methodology; (4) CMB instrumentation (BICEP/Keck, SPT, CMB-S4). 2025 APS Fellow; 2022 Moore EPII award. Director KICP.