Twitter Sockpuppet Analysis with NLP

Millions of tweets. Thousands of fake accounts. A sophisticated disinformation campaign.

Efficiently tuning topic models

In natural language processing, topic models are used to extract meaningful and human-interpretable topics from a corpus. However, tuning topic models for large corpora can be time consuming and computationally expensive. By monitoring topic coherence as a function of corpus size, we can determine how to efficiently create a high quality topic model. In this project, we will demonstrate this technique using the English Wikipedia corpus.

Sowing Black Hole Seeds: Direct Collapse Black Hole Formation with Realistic Lyman–Werner Radiation in Cosmological Simulations

Published in The Astrophysical Journal, 2018

We study the demographics of direct collapse massive black hole seed formation sites in the context of a cosmological SPH+N-body simulation with self-consistent, time-dependent, non-uniform Lyman-Werner radiation.

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The Role of Gravitational Recoil in the Assembly of Massive Black Hole Seeds

Published in The Astrophysical Journal, 2020

Massive black hole mergers release linear and angular momentum in the form of gravitational waves in a preferred direction due to asymmetries in the binary system. This release imparts a gravitational recoil kick to the merged system, which can reach up to thousands of kilometers per second. We study the role of gravitational recoil in the assembly of massive black hole seeds in the first billion years of the Universe.

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Sowing black hole seeds

Published: October 12, 2015

The role of gravitational recoil in the assembly of direct collapse massive black hole seeds

Published: December 13, 2018

Vanderbilt University

Introduction to Astronomy Lab, Vanderbilt University, Department of Physics and Astronomy, 2017

Introduction to Astronomy Laboratory

From Fall 2014 to Spring 2017, I served as a teaching assistant for the Department of Physics and Astronomy at Vanderbilt University. Each semester, I lead one section of the laboratory component of Vanderbilt’s undergraduate-level introductory astronomy course. This course covered topics including celestial motion, spectroscopy, extrasolar planet detection, stellar photometry, basic telescope operation, and night sky observation.