For the past half-century, relativistic outflows accompanying the final collapse of massive stars have predominantly been detected via high-energy emission (i.e., gamma-ray bursts, or GRBs). For my thesis, I am using the Zwicky Transient Facility (ZTF) to explore a more diverse set of phenomena, including cosmological afterglows without detected GRBs (Ho et al. 2018, 2020d), energetic broad-lined Ic supernovae (Ho et al. 2019b, 2020a, 2020c), and a new class of millimeter-bright explosions in dense circumburst material (Ho et al. 2019a, 2020b).
Before coming to Caltech, I spent a year on a Fulbright at the Max Planck Institute for Astronomy (MPIA) in Heidelberg, Germany. There, I worked with Hans-Walter Rix, Melissa Ness, and David Hogg on The Cannon. By propagating information from a high-S/N, high-resolution survey to low-resolution, noisy spectra, we assembled the largest catalog of stellar masses and ages to-date (Ho et al. 2017a, Ho et al. 2017b) as well as the largest catalog of lithium-rich giant stars (Casey, Ho et al. 2019).
I obtained my B.S. in Physics at MIT. As an undergraduate, I spent two summers at the National Radio Astronomy Observatory (NRAO), working with Scott Ransom on using millisecond pulsars in the globular cluster Terzan 5 to measure small-scale structure in the magnetic field of the Milky Way.