Lehman Garrison

Flatiron Research Fellow
Cosmology X Data Science Group
Center for Computational Astrophysics
Flatiron Institute

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About Me

I am a Flatiron Research Fellow at the Flatiron Institute's Center for Computational Astrophysics. Previously, I was a graduate student at the Harvard-Smithsonian Center for Astrophysics working with Daniel Eisenstein. My current research is on high-performance cosmological $N$-body simulations and the formation and statistics of large-scale structure. My general research interests include cosmology and high-performance computing.

I am the lead developer of the Abacus cosmological $N$-body code, which I work on with Daniel Eisenstein and Nina Maksimova. I also develop the Corrfunc code with Manodeep Sinha.



My publications on Google Scholar

AbacusCosmos Simulation Suite

Halo Visualization Gallery

$\sigma_8$ in Power-Law Cosmologies

A note on the RR term in autocorrelations

Swot vs Corrfunc: timing & accuracy

Fast repeated histogramming in numpy

High-Performance Python, or When to Write For Loops in Python