Cosmology & astrophysics

Postdoctoral Researcher
University of Manchester · Jodrell Bank

I connect physical models with cosmic observations, through theory, computation and inference.

Research

Four connected directions

Radio cosmology

I use the 21-cm line of neutral hydrogen to study cosmic history, from maps of large-scale structure to RHINO's measurement of the sky-averaged signal.

RHINO
A global 21-cm signal experiment.

Paper
Joint calibration and map-making
Bayesian inference for intensity-mapping observations.

Paper Talk
limTOD
Time-ordered data simulation for line intensity mapping.

Code
rheplicant
An auto-differentiable digital twin for radio telescopes.

Code
Mapping the anisotropic radio sky
Bayesian inference for radio observations.

Paper

Image: The RHINO horn antenna.

Weak gravitational lensing

I formulate weak lensing as a stochastic field theory, connecting the paths of light through cosmic structure to observable lensing statistics.

Statistical field theory for weak gravitational lensing
Lensing statistics from stochastic light propagation.

Paper
sft-wick
Feynman-diagram expansion and evaluation in stochastic field theories.

Paper Code
A statistical field theory for weak gravitational lensing
JBCA research talk, September 2026.

Slides

Image: Simulated weak-lensing convergence.

Astrophysical processes

I model radiation from interstellar matter, from the rotational dynamics of nanograins and anomalous microwave emission to synchrotron radiation.

SpyDust
Modelling spinning dust radiation from interstellar nanograins.

Paper Code Talk
Synchrotron emission modelling
Physical models of synchrotron radiation.

In preparation

Image: The geometry of a rotating grain.

Statistical and AI methods

I develop tools for Bayesian inference, fast emulation and AI-assisted scientific analysis, with applications across my research.

bayesmith
Structured Bayesian models and inspectable inference procedures.

Code
rheplicant-agent
An AI-assisted analysis layer for rheplicant.

In development
MomentEmu
Fast polynomial emulation of smooth mappings and cosmological statistics.

Paper Code
sft-wick
Feynman-diagram expansion and evaluation in stochastic field theories.

Paper Code