I taught the graduate course in classical mechanics and general relativity. My research is centered on general relativity – the Einstein equations for gravity. More precisely I am interested in properties and the behavior of light–rays in the presence of gravitational fields and how the gravitational field can be reconstructed from the properties of the the light–rays.
- American Physical Society Einstein Prize, 2011
- "CR Structures and Asymptotically Flat Space-Times," with P. Nurowski, Class. Quantum Grav. 23, (2006) 3123-3127.
- "Asymptotic twistor theory and the Kerr theorem," Class. Quantum Grav. 23, (2006) 3385-3392.
- " Infinity, H-space and Equations of Motion," with Carlos Kozmeh and Gilberto Silva-Ortigoza, 5th prize essay, Grav. Reseach Foundation (2006), to be published in GRG journal.
- "The Physical Meaning of the Robinson-Trautman-Maxwell Equations," (tentative title), with Carlos Kozameh and Gilberto Silva-Ortigoza, submitted to CQG.
- "The Universal Cut Function and Type II Metrics," – submitted to C&QG journal.