RT Dissertation/Thesis
T1 Phenomenology of the detection of ultra-high energy cosmic rays and neutrinos using the radio technique
A1 García Fernández, Daniel
A2 Universidade de Santiago de Compostela. Facultade de Física. Departamento de Física de Partículas, 
K1 The ANITA experiment
K1 The MAYBE experiment
K1 MBR
K1 The AMY experiment
K1 Algorithm
K1 Ultra-high energy cosmic rays
AB Ultra-high energy cosmic rays are particles that have energies up to 1020 and beyondd andthat arrive to the Earth after travelling the Universe. These energies are more than onemillion times the energies availably by means of man-made accelerators. Cosmic rays poseseveral questions that remain unanswered, such as which is their composition at ultra-highenergies, which are their sources (the regions of the Universe where they are produced),how they are accelerated, or how they interact with the medium while they propagatetowards the Earth, etc.The existence of ultra-high energy cosmic rays that are protons or charged nuclei indicatesthat the production of neutrinos because of the interactions of the cosmic rays,limiting the distance the ultra-high energy cosmic rays can reach (GZK effect). On theother hand, neutrinos, being particles that interact only via weak force and with crosssections about 107 smaller than hadronic cross sections, can come from the edge of theUniverse without deviating or interacting. This makes them extraordinary cosmic messengers.The detection methods of ultra-high energy cosmic rays and neutrinos involve thecreation of particle showers from the interaction of the cosmic ray with a particle in amedium (atmosphere or ice, for instance). These showers are measured with detectorssuch as water tanks provided with photomultipliers, or fluorescence telescopes. Throughthe measurable quantities of a shower several properties of the initial particle can beinferred, like the energy, the type of particle, the arrival direction...One of the detection methods is the radio technique. This technique began to bedeveloped in the 1960s, reaching some promising first results, but the limitations of theelectronics at the time forced the research to stop. In the last years, and thanks to theadvances in electronics, that now allows the measuring of voltages with temporal precisionbelow the nanosecond, the radio technique is witnessing a renaissance, with experimentsas ANITA, LOFAR, CODALEMA, ARA or ARIANNA.The basic idea of the radio technique is the following. When a cosmic ray or a neutrinocollides with a material medium in the Earth, the resulting shower contains charged
YR 2016
FD 2016-06-17
LK http://hdl.handle.net/10347/14798
UL http://hdl.handle.net/10347/14798
LA eng
DS Minerva
RD 24 abr 2026