Mortlock develops Bayesian statistical methods to find and characterise rare astrophysical objects in large sky surveys, most notably the discovery of some of the most distant known quasars, informing early-Universe black-hole growth and reionisation studies.

NON-PREFERRED (astronomy pivot, kept for review). Simcoe designs and builds custom cryogenic infrared spectrographs (FIRE, and the new fiber-fed LLAMAS integral-field spectrograph) for the Magellan telescopes to study the chemistry of galaxies and quasars in the first billion years after the Big Bang; this is an instrumentation-driven astro program rather than a quantum-sensor program per se, so it is included as a borderline pivot.

Warren uses large near-infrared sky surveys (e.g. UKIDSS/VISTA) to discover and characterise high-redshift quasars, cool brown dwarfs and other rare populations, and works on wide-field survey design and statistics.

Webster works on the Epoch of Reionisation with the Murchison Widefield Array, where the science goal — detecting the redshifted 21-cm signal from the first stars — is a five-orders-of-magnitude foreground-subtraction and instrumental-calibration problem rather than an astrophysics problem. Her group's contributions are in foreground modelling, ionospheric and beam calibration, and the statistical detection of a signal buried far below the systematics floor; she also works on quasar accretion physics. Positioned against the established body of NV-ensemble quantum sensing work — DEER, nanoscale NMR and T1 relaxometry protocols operating at pT/sqrt(Hz) field sensitivity — the methodological parallel is exact: like a pT/sqrt(Hz) NV ensemble measurement, a 21-cm detection lives or dies on the control of correlated systematics rather than on raw sensitivity. Borderline inclusion under the astronomy criterion, kept because the array and its calibration are the central object of study.