Chris Byrohl, PhD

Astrophysicist

I develop simulations and synthetic observations to understand how galaxies form, evolve, and connect to the cosmic web, from the early Universe to the present day.

Latest · July 2026

THOR: simulation support and absorption mock skewers

Native support for the major galaxy formation codes and fast, flexible absorption-line sightlines through their simulations.

Read the update → Project overview

Gas structure in a simulated galaxy used for THOR synthetic observations

Recent Activity

Jul 2026 Magnetogenesis by galactic processes How supernova and black hole feedback seed cosmic magnetic fields → May 2026 Detonation in Type Ia supernovae Turbulence drives the transition from deflagration to detonation → Mar 2026 Inferring CGM mass with X-ray resonant scattering A new way to weigh the hot gas surrounding galaxies →

Research Projects

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Active

Simulating Lyman-alpha Emitters

Lyman-alpha radiative transfer Monte Carlo

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Active

cosmosTNG

constrained simulation COSMOS JWST

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Active

THOR: GPU-accelerated synthetic observations

A portable, massively parallel framework for radiative transfer and synthetic observations of galaxy formation simulations.

Documentation Code paper

radiative transfer GPU Monte Carlo +2

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Recent Publications

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Magnetogenesis by galactic processes: impact on circumgalactic and intergalactic fields

Rahul Ramesh, Enrico Garaldi, Chris Byrohl

arXiv e-prints · 2026

arXiv NASA ADS

Inferring the Mass of the Circumgalactic Medium Using X-Ray Resonant Scattering

Nhut Truong, Maxim Markevitch, Dylan Nelson, Chris Byrohl

The Astrophysical Journal · 2026

arXiv DOI NASA ADS

First-Principles Turbulence-Driven Deflagration-to-Detonation Transition Mechanism for Near-Chandrasekhar Mass White Dwarf Progenitors

Krut Patel, Akshay Dongre, Robert Fisher, Alexei Poludnenko, Vadim Gamezo, Mark Ivan Ugalino, Chris Byrohl

arXiv e-prints · 2026

arXiv NASA ADS

The Redshift Evolution of Extended Lyα Emission in HETDEX. I. Imaging Methods and Emission Measurements

Brianna McKay, Sarah Tuttle, Erin Mentuch Cooper, Dustin Davis, Robin Ciardullo, Daniel J. Farrow, Steven L. Finkelstein, Karl Gebhardt, Chenxu Liu, Gregory Zeimann, Chris Byrohl

The Astrophysical Journal · 2026

DOI NASA ADS

Disentangling the galactic and intergalactic components in 313 observed Lyman-alpha line profiles between redshift 0 and 5

Siddhartha Gurung-López, Chris Byrohl, Max Gronke, Daniele Spinoso, Alberto Torralba, Alberto Fernández-Soto, Pablo Arnalte-Mur, Vicent J. Martínez

The Open Journal of Astrophysics · 2026

arXiv DOI NASA ADS

THOR: a GPU-accelerated and MPI-parallel radiative transfer code

Chris Byrohl, Dylan Nelson

2025

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