My Masters thesis for Data Science at the College of Charleston. In a nutshell, it is a method of clustering GRB lightcurves. Check out the PDF! Title: A Search for Self-Similarities in BATSE Gamma-Ray Burst Emissions Using Agglomerative Clustering Abstract: We present a new method for categorizing Gamma-Ray Burst (GRB) emission episodes with similar light […]
Category: Research and Publications
Smoke and Mirrors: Time-Reversed Structures in GRBs
Smoke and Mirrors: Signal-to-Noise and Time-Reversed Structures in Gamma-Ray Burst Pulse Light Curves We demonstrate that the `smoke’ of limited instrumental sensitivity smears out structure in gamma-ray burst (GRB) pulse light curves, giving each a triple-peaked appearance at moderate signal-to-noise and a simple monotonic appearance at low signal-to-noise. We minimize this effect by studying six […]
GRB Lightcurve Clustering
Abstract: We present a new method for categorizing and finding Gamma-Ray Bursts (GRB’s) with similar light curves from the Burst and Transient Source Experiment (BATSE), onboard NASA’s Compton Gamma-Ray Observatory (CGRO). Using χ2 values as ’similarity distances’ from any two respective GRBs’ 64ms light curves, we compare every GRB to every other GRB through a […]
GRB Pulse Analysis
Abstract: We present a preliminary analysis of previously unstudied gamma-ray burst pulses. Our sample consists of gamma-ray bursts observed between December 19, 1995 and February 2, 1997 by the Burst and Transient Source Experiment (BATSE) on NASA’s Compton Gamma-Ray Observatory. We found that the observable properties of these pulses are consistent with those of previously […]
Phylogeographic Analysis
Abstract: The three-lined salamander, Eurycea guttolineata, is a wide-ranging lungless salamander in the southeastern United States. We have sampled seventy-seven populations spanning the entire distribution of the three-lined salamander. We have amplified, purified, and sequenced 872 base pairs of the mitochondrial gene Cty-b and used this data to reconstruct the evolutionary history of three-lined salamanders. […]