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The analysis of VERITAS muon images using convolutional neural networks

Published online by Cambridge University Press:  30 May 2017

Qi Feng ,
Tony T. Y. Lin  and
for the VERITAS Collaboration
Qi Feng*
Affiliation:
Physics Department, McGill University, Montreal, QC H3A 2T8, Canada
Tony T. Y. Lin
Affiliation:
Physics Department, McGill University, Montreal, QC H3A 2T8, Canada
for the VERITAS Collaboration
Affiliation:
http://veritas.sao.arizona.edu/
*
† qi.feng2@mcgill.ca
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Abstract

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Imaging atmospheric Cherenkov telescopes (IACTs) are sensitive to rare gamma-ray photons, buried in the background of charged cosmic-ray (CR) particles, the flux of which is several orders of magnitude greater. The ability to separate gamma rays from CR particles is important, as it is directly related to the sensitivity of the instrument. This gamma-ray/CR-particle classification problem in IACT data analysis can be treated with the rapidly-advancing machine learning algorithms, which have the potential to outperform the traditional box-cut methods on image parameters. We present preliminary results of a precise classification of a small set of muon events using a convolutional neural networks model with the raw images as input features. We also show the possibility of using the convolutional neural networks model for regression problems, such as the radius and brightness measurement of muon events, which can be used to calibrate the throughput efficiency of IACTs.

Keywords

Data analysisclassificationconvolutional neural networksregression.

Information

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S325: Astroinformatics , October 2016 , pp. 173 - 179
Copyright
Copyright © International Astronomical Union 2017 

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