| Naslov: | Application of machine learning techniques for cosmic ray event classification and implementation of a real-time ultra-high energy photon search with the surface detector of the Pierre Auger Observatory : dissertation |
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| Avtorji: | ID Zehrer, Lukas (Avtor)
ID Vorobiov, Serguei (Mentor) Več o mentorju...  |
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| Datoteke: |  thesis.pdf (46,18 MB)
MD5: D294777E0EB2AFBD1F0CF04A40E85203
 http://repozitorij.ung.si/IzpisGradiva.php?id=6815
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Doktorsko delo/naloga |
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| Tipologija: | 2.08 - Doktorska disertacija |
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| Organizacija: | FPŠ - Fakulteta za podiplomski študij
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| Opis: | Despite their discovery already more than a century ago, Cosmic Rays (CRs) still did not divulge all their properties yet. Theories about the origin of ultra-high energy (UHE, > 10^18 eV) CRs predict accompanying primary photons. The existence of UHE photons can be investigated with the world’s largest ground-based experiment for detection of CR-induced extensive air showers (EAS), the Pierre Auger Observatory, which offers an unprecedented exposure to rare UHE cosmic particles.
The discovery of photons in the UHE regime would open a new observational window to the Universe, improve our understanding of the origin of CRs, and potentially uncloak new physics beyond the standard model.
The novelty of the presented work is the development of a "real-time" photon candidate event stream to a global network of observatories, the Astrophysical Multimessenger Observatory Network (AMON). The stream classifies CR events observed by the Auger surface detector (SD) array as regards their probability to be photon nominees, by feeding to advanced machine learning (ML) methods observational air shower parameters of individual CR events combined in a multivariate analysis (MVA).
The described straightforward classification procedure further increases the Pierre Auger Observatory’s endeavour to contribute to the global effort of multi-messenger (MM) studies of the highest energy astrophysical phenomena, by supplying AMON partner observatories the possibility to follow-up detected UHE events, live or in their archival data. |
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| Ključne besede: | astroparticle physics, ultra-high energy cosmic rays, ultra-high energy photons, extensive air showers, Pierre Auger Observatory, multi-messenger, AMON, machine learning, multivariate analysis, dissertations |
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| Kraj izida: | Nova Gorica |
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| Kraj izvedbe: | Nova Gorica |
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| Založnik: | L. Zehrer |
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| Leto izida: | 2021 |
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| Leto izvedbe: | 2021 |
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| Št. strani: | VII, 202 str. |
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| PID: | 20.500.12556/RUNG-6815 |
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| COBISS.SI-ID: | 82554371 |
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| UDK: | 53 |
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| NUK URN: | URN:SI:UNG:REP:ACGHVPCB |
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| Datum objave v RUNG: | 27.10.2021 |
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| Število ogledov: | 4301 |
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| Število prenosov: | 215 |
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| Metapodatki: |    |
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