Astronomy, optics and Bayesian statistics

I'm a graduate student in astrophysics at the University of Oxford. I study exoplanets and develop new and better methods for detecting and characterizing them. My main focus at the moment is on observing the brightest stars observed by the Kepler and K2 missions, especially using collateral "smear" data for asteroseismology, and applying Gaussian processes and other Bayesian methods to correct for instrumental systematics in studies of exoplanets and stellar physics.

These nearby bright stars are exciting for multi-messenger stellar astronomy, as they are close enough to combine asteroseismology with interferometry and spectroscopy to properly pin down their physics with multiple independent constraints. These nearby stars are important as an anchor for the stellar models we use for understanding more distant stars and exoplanets.

I'm also pursuing novel high angular resolution imaging methods, in particular aperture masking and kernel phase interferometry with extreme adaptive optics and integral field spectrographs. These permit spatially-resolved detections of faint companions to stars and simultaneous extraction of their spectra, with interferometry providing a boost to spatial resolution, contrast limits, and speckle calibration. This has applications in wavefront sensing, adaptive optics, and photonic technology.

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