Cosmic rays, physics, teaching, and other stuff.

I study how cosmic rays reach extreme energies, and what they reveal about the universe.

Cosmic rays / Astrophysical shocks / Large-scale structureDiscover more

Research

How does nature accelerate particles to energies far beyond our reach? I look for answers in the shocks and magnetic fields that shape the cosmos.

Tracing the origins of the most energetic particles in the universe.

Exploring particle acceleration in galaxy clusters and filaments.

Bringing together cosmic rays, radio waves, gamma rays, and neutrinos.

Featured work

A model for cosmic-ray origins

2026 · Research paper

Paul Simeon, Noémie Globus, Kirk S. S. Barrow & Roger Blandford

A model in which cosmic rays gain energy in stages, from shocks within galaxies to the vast shocks of large-scale structure.

Teaching

I’m also interested in how we learn physics—and how interactive simulations can help turn abstract concepts into intuition.