Air shower reconstruction using HAWC and the Outrigger array

Joshi, Vikas; Schoorlemmer, Harm; for the HAWC Collaboration

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Air shower reconstruction using HAWC and the Outrigger array

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Joshi, Vikas
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Schoorlemmer, Harm
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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1908.06650.pdf
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Citation

Joshi, V., Schoorlemmer, H., & for the HAWC Collaboration (2019). Air shower reconstruction using HAWC and the Outrigger array. Proceedings of Science, ICRC 2019: 1908.06650v1. Retrieved from http://arxiv.org/abs/1908.06650.

Cite as: https://hdl.handle.net/21.11116/0000-0005-6741-E

Abstract

The High Altitude Water Cherenkov (HAWC) gamma-ray observatory detects
cosmic- and gamma-ray initiated air showers in the TeV energy range using 300
water Cherenkov detectors (WCDs). To improve its sensitivity at the highest
energies, HAWC has been upgraded with a sparse array of 345 small WCDs
(outrigger array) around the HAWC main array. The outrigger array increases the
instrumented area of HAWC by a factor of 4 and has started taking data since
August 2018. A new gamma-ray reconstruction method has been developed to
improve the reconstruction of the air showers which combines the data of mixed
type particle detector arrays. In this contribution, we will show the first
results of the combined air shower reconstruction of HAWC and its outrigger
array using Monte Carlo simulations and the first combined experimental data
set.