Code

Open-source software I contribute to.

Most of my research runs on open-source code, and I contribute to the packages I use. These are the main ones.

FRB

FRB is a community Python package for fast radio burst science: dispersion measure calculations, host galaxy analysis, FRB-galaxy association, and queries of public sky surveys. I have made substantial contributions across the package, most recently a rewrite of the module that retrieves catalogs and images from public surveys.

FRBs/FRB

LLAMAS-pyjamas

LLAMAS-pyjamas is the data reduction pipeline for LLAMAS, the integral-field spectrograph on the Magellan telescopes. My fork adds dark subtraction and a set of post-reduction steps: flux calibration, astrometric correction, combining data cubes, and fitting emission lines in every spaxel.

This is the code behind my paper on spatially resolved metallicities of FRB host galaxies, which I explain in plain language here.

SunilSimha/llamas-pyjamas

Other contributions

I have also contributed to two packages used to reduce slitmask data from the LRIS spectrograph at Keck Observatory:

  • PypeIt, the Python spectroscopic data reduction pipeline.
  • tilsotua, which reconstructs the sky positions of the slits in LRIS slitmasks.