Physics and Astronomy 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 […]

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Physics and Astronomy Research and Publications Software and Data Science

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 […]

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Physics and Astronomy Research and Publications

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 […]

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Research and Publications Software and Data Science

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. […]

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