Research
Highlights from my research on the first galaxies, protoclusters and reionisation.
I study galaxies in the first few hundred million years after the Big Bang, using JWST, the VLT and large-scale cosmological simulations. Much of my recent work establishes how a galaxy's environment, from mergers to dense protoclusters, shaped its growth and its contribution to reionisation.
A few highlights are below. For every paper, along with current bibliometrics, see my publications or my CV.
Too many protoclusters? Reconciling the overabundance of cluster progenitors within the first billion years of the Universe
Not all protoclusters host evolved galaxies: Evidence for reduced environmental effects in a lower halo mass protocluster at z=7.66
Before its time: a remarkably evolved protocluster core at z=7.88
Rising from the ashes: evidence of old stellar populations and rejuvenation events in the very early Universe
Deciphering Lyman-α emission deep into the epoch of reionization
GN-z11: The environment of an active galactic nucleus at z = 10.603. New insights into the most distant Lyα detection
