Post-graduate theses
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Identifier |
000459429 |
Title |
Neutrino radio signatures with Argos |
Alternative Title |
Ραδιουπογραφές νετρίνων με το Argos |
Author
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Φουκαράκης, Εμμανουήλ Μ.
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Thesis advisor
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Παυλίδου, Βασιλική
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Reviewer
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Αντωνιάδης, Γιάννης
Casadio, Carolina
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Abstract |
Among the most fundamental constituents of high-energy physics and the most abundantly observed particles on Earth are ultra high-energy (UHE) cosmic rays and their products, cosmogenic neutrinos of the same energy order. Many aspects of UHE cosmic rays such as the origin, the composition and a satisfying explanation of the main characteristics of their observed spectrum remain largely unknown even today. Many attempts have been made by the scientific community to provide answers to these questions with some theories taking the lead as they are in greater agreement with experimental data.
Contrary to the first impression for neutrinos, being particles with almost no mass and charge, being weakly or not at all interacting with matter, neutrinos hide within themselves the greatest information to solve a large part of the puzzle of cosmological physics by revealing the answers around cosmic ray sources. Neutrinos not having an electric charge remain unchanged by the effect of magnetic fields, having as a consequence that the direction in which they become detectable points right back to their sources while maintaining the original energy of these sources as there are no losses due to their interaction with matter. By studying the characteristics of detectable neutrinos we extract all the necessary information about their sources, the cosmic rays. Cosmic rays produced at very close distances with respect to their astrophysical sources can, through the understanding and precise measurement of their characteristics such as their energy, direction, composition, number, lead us back to them with great certainty.
This thesis is dedicated to the study of UHE neutrinos and to make predictions for their detection through a promising technique, lunar observations. This technique is based on the Askaryan effect which argues that UHE neutrinos when interacting with the lunar regolith generate very narrow radio pulses capable of being detectable by ground-based telescopes. Our own study of the phenomenon is based on the upcoming use of the under design ARGOS telescope which is expected to be built at the Skinakas Observatory on Mount Psiloritis in Crete, a radio quiet site. More specifically, in this work, the sensitivity of the ARGOS telescope to cosmogenic neutrino fluxes is calculated and a comparison is made with past and future experiments. Future potential detection of neutrinos with ARGOS or not will surely provide important insights into existing physical models and existing theories of cosmic sources by confirming them or defying them or even paving the way to new fundamental physics.
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Language |
English |
Subject |
Argos telescope |
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Askaryan effect |
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Cosmogenic neutrinos |
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Lunar observations |
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Neutrino fluxes |
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Sensitivity limits |
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UHE cosmic rays |
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UHE neutrinos |
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Όρια ευαισθησίας |
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Κοσμικές ακτίνες υψηλών ενεργειών |
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Κοσμογονικά νετρίνα |
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Νετρίνα υψηλών ενεργειών |
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Ροές νετρίνων |
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Σεληνιακές παρατηρήσεις |
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Τηλεσκόπιο Argos |
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Φαινόμενο Askaryan |
Issue date |
2023-11-22 |
Collection
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School/Department--School of Sciences and Engineering--Department of Physics--Post-graduate theses
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Type of Work--Post-graduate theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/6/5/7/metadata-dlib-1697273945-794368-4425.tkl
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Views |
953 |