Informal (though at times slightly technical) descriptions of a few of my major research interests.
![](assets/images/ConstraintDamping_str.jpg)
Representing the field equations
Before a numerical relativity simulation can begin, we need to turn the physical field equations into a well-posed differential equations problem for the computer.
![](assets/images/BnnWireframe.png)
Black Hole Spin
Characterizing a black-hole collision requires us to define what we mean by the angular momentum of warped space.
![](assets/images/FprintOnCelSphere.png)
Ringdown to the final state
It was long presumed that when two black holes collide, the merger remnant must settle down to a stationary black hole. Checking this required numerical relativity and some clever engineering.
![](assets/images/GW150914GW.png)
Visualizing the dynamics of spacetime
Computational relativity codes provide their results as a sea of numbers. Translating that sea of numbers into a visceral picture of spacetime dynamics requires new techniques of scientific visualization.