Cosmology

My research is on cosmology.

I have published on a wide range of topics in cosmology, including the following (in roughly reverse-chronological order).

I welcome enquiries from potential PhD students.

Some interesting figures I made are shown - clicking on one will take you to the paper in which it appears.

Primordial Non-Gaussianity visualised in 3D (2010).

Synthetic Lyman-alpha forest and the effect of adding a primordial magnetic field (2013).

A probability density function for an extreme-radius void (2015).

The amplitude of primordial gravitational waves for stochastically generated models of inflation (2006).

The skewness-kurtosis plane, demonstrating the Hamburger-moment theorem and its relevance for cosmology (2010).

Phase space for a dynamical dark energy model and the effects of adding a dark-matter intereaction (2008).

My most recent papers investigate applications of extreme-value statistics to various astrophysical objects, including the calculations of:
- the most massive galaxy clusters
- the largest cosmic voids
- the most massive primordial black holes
- the extremal spins of primordial black holes
- the most massive Population III stars
- the brightest high-redshift galaxies observable by the James-Webb Space Telescope (JWST)
- the brightest active galactic nuclei (AGN)
Attractor dynamics in cosmological inflation. Distinguishing inflation models with measurements of primordial gravitational waves.
Primordial nongaussianity and its observational signature e.g. in galaxy cluster abundances and the cosmic 21cm signals.
Primordial magnetic fields and its signature in the Lyman-α forest,
Dynamical dark energy models and its detection in weak-lensing statistics and primordial gravitational waves.