Neutrino Vertex Reconstruction in South Pole Ice

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 approximati...

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Bibliographic Details
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
Description
Summary: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.

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