Neutrino Vertex Reconstruction in South Pole Ice

• Published in: EPJ Web of Conferences
• Main Authors: Beheler-Amass M., Karle A., Kelley J.L., Lu M.-Y.
• Format: Article in Journal/Newspaper
• Language: English
• Published: EDP Sciences 2019
• Subjects: Physics; QC1-999; South Pole; South pole
• Online Access: https://doi.org/10.1051/epjconf/201921602011; https://doaj.org/article/172f660ca35e4860ab1e7edc32660f98

Reconstruction of potential ultra-high-energy (UHE) neutrino events at the Askaryan Radio Array (ARA) is complicated by the variable index of refraction of South Pole ice, leading to curved radio signal paths from the interaction vertex. Using a spline table framework for fast raytracing approximation, we perform a GPU-accelerated interferometric reconstruction of the event vertex. We also demonstrate how use of both direct and reflected/refracted radio signals can allow reconstruction of the distance to the interaction vertex, an important step towards neutrino energy reconstruction.