About me

I study diffuse hot matter in the Universe — from the remnants left by exploding supernova, to the huge reservoirs of hot, ionized plasma pervading galaxy clusters, to the tenuous hot medium tracing the web of galaxies in intergalactic space, understanding the nature of gas at millions of degrees in various environments is key to understanding the evolution of our Universe and how the building blocks of life were created and distributed throughout space. Material at these temperatures emits strongly in X-rays, and so much of my work entails designing and characterizing instruments to detect it.

Featured

XRISM observatory
X-ray Imaging and Spectroscopy Mission (XRISM)

XRISM is a joint Japan-US-European mission flying a high-spectral-resolution X-ray imaging spectrometer. I lead the in-flight calibration team, contribute to the ground processing and analysis tools, and am active in science investigations using XRISM.

AXIS observatory
Advanced X-ray Imaging Satellite (AXIS)

AXIS is a NASA Probe-class mission concept recently awarded a Phase A study to compete for a flight mission. It features high-throughput, high-spatial-resolution spectral imaging. I lead the X-ray camera team and am active in helping to develop the science case for AXIS.