Estimation of the exposure of the TUS space-based cosmic ray observatory
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Date
2022-03-18
Publication Type
Conference Paper
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yes
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Abstract
The TUS observatory was the first orbital detector aimed at the detection of ultra-high energy cosmic rays (UHECRs). It was launched on April 28, 2016, from the Vostochny cosmodrome in Russia and operated until December 2017. It collected ∼ 80, 000 events with a time resolution of 0.8 μs. A fundamental parameter to be determined for cosmic ray studies is the exposure of an experiment. This parameter is important to estimate the average expected event rate as a function of energy and to calculate the absolute flux in case of event detection. Here we present results of a study aimed to calculate the exposure that TUS accumulated during its mission. The role of clouds, detector dead time, artificial sources, storms, lightning discharges, airglow and moon phases is studied in detail. An exposure estimate with its geographical distribution is presented. We report on the applied technique and on the perspectives of this study in view of the future missions of the JEM-EUSO program.
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Publication status
published
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Editor
Book title
Proceedings of 37th International Cosmic Ray Conference
Journal / series
Volume
395
Pages / Article No.
333
Publisher
Sissa Medialab
Event
37th International Cosmic Ray Conference (ICRC 2021)
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Cosmic ray detectors; Cosmology; Geographical distribution; Observatories; Cosmic rays
Organisational unit
02717 - Institut für Atmosphäre und Klima / Inst. Atmospheric and Climate Science