My research focuses on theoretical astrophysics, from planet formation through dynamics of stars in the galactic center to violent explosions like Super Nova, Gamma Ray Bursts and Tidal Disruption Events.
My group’s research is focused on understanding the origin and evolution of the universe through a series of programs to define the observations, experiments, concepts, and simulations needed to answer the fundamental questions in cosmology. Combining experimentation, computation, and theory, our research continues to develop the foundation of an accurate, reliable model of the cosmos. … Continued
I study our own Milky Way galaxy to find out how and why it evolved to what it is today. The evidence is that our Galaxy is a fairly typical spiral galaxy. That means that by studying our home in the universe, we can learn a lot about the evolution of other spiral galaxies like … Continued
I am an astrophysical theorist with interests in a wide variety of problems, including compact objects, plasma astrophysics, stellar physics, and galaxy formation. My research utilizes both analytic calculations and numerical simulations.
I am a theoretical astrophysicist who is developing the conceptual framework needed to understand the violent and capricious nature of the Universe. I use computer simulations to explore transient phenomena such as collisions, mergers, and disruptions of stars – especially those involving compact objects like black holes, neutron stars, and white dwarfs.
I study the Cosmic Microwave Background, the faint afterglow of the birth of the universe.
My research group focuses on questions of galaxy formation and evolution addressed through “galactic archaeology” of the fossil evidence of past events left in the chemokinematical properties of resolved stellar populations. Since 2005, I have been Principal Investigator of the Apache Point Observatory Galactic Evolution Experiment (APOGEE) and its successor, APOGEE-2, which is an international … Continued
My group uses telescopes on the ground and in space to explore the formation and evolution of galaxies. Our research focuses on the physical processes that shape the baryonic content of galaxies. These include galactic winds which are believed to limit the star formation rate and disperse elements produced by stars throughout the cosmos. Understanding … Continued
My current focus is on the dynamic optical sky. The primary facility for this undertaking is the newly commissioned Zwicky Transient Facility (ZTF) at the Palomar Observatory. ZTF, by imaging the night sky repeatedly, is finding scores of supernovae and tens of thousands of variable stars every night. The same data allows astronomers to catalog … Continued
My research group investigates a range of topics in fundamental physics, using the Universe as a laboratory to explore scales and energies that cannot be probed in any terrestrial laboratory. Our research requires tight coupling between the experimental, analytical, and theoretical disciplines. We design, build, and field experiments including balloon-borne and space-based telescopes. Our investigations … Continued