Research Areas: Physics; Astronomy RESEARCH INTERESTS Observational and Experimental High-Energy Astrophysics My research is divided roughly 50-50 between developing new optics and detectors for high energy astrophysics, and using current NASA missions (Chandra, Swift, XMM and Fermi) combined with Caltech's optical telescopes (Palomar and Keck) to study energetic phenomena ranging from gamma-ray bursts, black holes on all mass scales, to neutron stars and supernovae.