My research is in the area of theoretical and computational astrophysics, with my main scientific interests in the processes of star and planet formation, dynamics of the interstellar medium, structure and
evolution of spiral galaxies, and the physics of accretion/outflow systems. I am also active in development of numerical methods and tools for computational fluid dynamics. My work focuses on understanding the
physics behind a wide range of astronomical systems involving gas dynamics, from the collapse of clouds to create our own and other solar systems, to the development of spiral arms in the Milky Way and other disk galaxies, to the regulation of star formation in the cosmos over the last ten billion years. An important emphasis has been on quantifying the roles of supersonic turbulence.
I received degrees in Physics from Harvard (A.B., 1987) and Berkeley (Ph.D., 1993), and held a postdoctoral fellowship at the Harvard-Smithsonian Center for Astrophysics. Before joining the department in Princeton, I was on the faculty of the University of Maryland from 1996-2012.