Dissertations / Theses on the topic 'Ultra High Energy Cosmic Rays phenomenology'
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TORRI, MARCO DANILO CLAUDIO. "LORENTZ INVARIANCE VIOLATION EFFECTS ON ULTRA HIGH ENERGY COSMIC RAYS PROPAGATION: A GEOMETRICAL APPROACH." Doctoral thesis, Università degli Studi di Milano, 2019. http://hdl.handle.net/2434/625711.
Full textBlanco-Pillado, José Juan. "Topological defects and ultra-high energy cosmic rays /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2001.
Find full textAdviser: Alexander Vilenkin. Submitted to the Dept. of Physics. Includes bibliographical references (leaves 108-114). Access restricted to members of the Tufts University community. Also available via the World Wide Web;
Taylor, Andrew Martin. "The propagation of ultra high energy cosmic rays." Thesis, University of Oxford, 2007. http://ora.ox.ac.uk/objects/uuid:63572ebe-fb32-41b6-8b91-a7294db135a6.
Full textBrobeck, Elina Stone Edward McKeown R. D. "Measurement of ultra-high energy cosmic rays with CHICOS /." Diss., Pasadena, Calif. : California Institute of Technology, 2009. http://resolver.caltech.edu/CaltechETD:etd-10192008-143041.
Full textLundanes, Ingvild Olsen. "The propagation and energy losses of ultra high energy cosmic rays." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12654.
Full textBarbot, Cyrille. "Super-heavy X-particle decay and ultra-high energy cosmic rays." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969379846.
Full textKhanin, Alexander. "Bayesian methods for the analysis of ultra-high-energy cosmic rays." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/42034.
Full textMorris, Chad Michael. "Detection Techniques of Radio Emission from Ultra High Energy Cosmic Rays." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1254506832.
Full textRodrigues, Xavier. "Blazars as Sources of Neutrinos and Ultra-high-energy Cosmic Rays." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20610.
Full textThe origin of ultra-high-energy cosmic rays (UHECRs) is still unclear. Neutrino telescopes like IceCube have observed a flux of high-energy cosmic neutrinos, expected to originate in cosmic ray (CR) interactions. However, their arrival directions do not statistically correlate with the positions of known high-energy astrophysical sources. In this thesis we explore blazars, a class of active galaxies, as potential UHECR accelerators. Motivated by evidence that a fraction of the UHECRs are heavier than protons, we model the interactions of CR nuclei with the photon fields present in blazars, in order to estimate the emitted neutrino and UHECR spectrum. We conclude that in dim blazars, accelerated CRs do not interact efficiently due to the low photon density, but instead escape the source unscathed. In bright blazars, photo-hadronic interactions are more efficient, leading to abundant production of neutrinos and lighter nuclei. We use this model to quantify the neutrino emission from the entire cosmological blazar population. We conclude that low-luminosity blazars currently unobserved but expected theoretically, can explain the entire IceCube flux at the highest energies. We then focus on blazar TXS 0506+056, from whose direction a neutrino was recently detected during an electromagnetic flaring state. We test the hypothesis that a signal of 13+/-5 neutrinos observed by IceCube from the same direction in 2014-15 may have originated in the same source. Given the constraints from multi-wavelength observations, this model can explain at most 5 neutrino events. Finally, we study the remnant of the first neutron star merger ever observed, object GW170817. We model the particle interactions in the source and show that multi-wavelength observations can provide a constraint on the magnetic field strength. We estimate that this source may be an efficient CR emitter, which shows the importance of future multi-messenger observations to better constrain this source type.
Smith, Nigel James Telfer. "A search for ultra high energy gamma ray sources from the South Pole." Thesis, University of Leeds, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291023.
Full textLaHurd, Danielle V. "Searching for Quark Gluon Plasma Signatures in Ultra High Energy Cosmic Rays." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1479298851843212.
Full textBurton, Ross E. "Upper Limits on the Ultra-High Energy Cosmic Ray Flux from Unresolved Sources." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1323452264.
Full textDundovic, Andrej [Verfasser], and Günter [Akademischer Betreuer] Sigl. "On Anisotropies of Ultra-high Energy Cosmic Rays / Andrej Dundovic ; Betreuer: Günter Sigl." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2018. http://d-nb.info/1162275243/34.
Full textMottram, M. J. "A search for ultra-high energy neutrinos and cosmic-rays with ANITA-2." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1344072/.
Full textOikonomou, F. "Constraining the sources of ultra-high energy cosmic rays with multi-messenger data." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1450249/.
Full textLang, Rodrigo Guedes. "Effects of Lorentz invariance violation on the ultra-high energy cosmic rays spectrum." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-13042017-143220/.
Full textRelatividade é uma das mais importantes e bem testadas teorias e a invariância de Lorentz é um de seus pilares. A violação da invariância de Lorentz (VIL), todavia, tem sido discutida em diversos modelos de gravidade quântica e altas energias. Por tal motivo, é crucial testá-la. Diversos testes, tanto terrestres quanto astrofísicos, foram realizados nos últimos anos e fornecem limites na violação. Este trabalho se insere nesses esforços e discute a possibilidade de testar VIL com raios cósmicos de altíssima energia. Os efeitos da VIL em sua propagação e as consequentes mudanças no espectro de raios cósmicos de altíssima energia são obtidos e comparados com os dados experimentais do Observatório Pierre Auger. Um cálculo analítico para a inelasticidade no referencial do laboratório com VIL para qualquer interação da forma a + b → c + d é apresentado e usado para obter o espaço de fase e as perdas de energia para a produção de píons para prótons, a fotodesintegração para núcleos e a produção de pares para fótons com VIL. Uma parametrização para o limiar de energia da fotodesintegração com VIL também é proposta. O principal efeito observado é uma diminuição no espaço de fase e uma consequente diminuição nas perdas de energia. Tais mudanças foram implementadas em códigos de Monte Carlo para a propagação e os espectros resultantes para prótons, núcleos e fótons na Terra foram obtidos e ajustados aos dados do Observatório Pierre Auger. É mostrado que limites superiores nos coeficientes de VIL para o fóton podem ser deduzidos dos limites superiores para o fluxo de fótons do Observatório Pierre Auger.
Morejon, Leonel. "New Interaction Models of Ultra-high-energy Cosmic Rays from a Nuclear Physics Approach." Doctoral thesis, Humboldt-Universität zu Berlin, 2021. http://dx.doi.org/10.18452/22585.
Full textThe origin of the ultra-high-energy cosmic rays (UHECRs) is still unknown. Photonuclear interactions of cosmic rays are key to understanding this problem in a multimessenger context. Nuclear physics insights are crucial in building accurate models to interpret the data that indicates UHECR can be heavier than protons. This thesis presents models that improve three aspects of high-energy astronuclear physics modelling: photomeson production by cosmic-ray nuclei heavier than protons, gamma-ray emission from unstable nuclei created by the photodisintegration of cosmic rays, and the simulation of extragalactic propagation of nuclei heavier than iron (so-called superheavy isotopes). The photomeson model is the first in the literature to go beyond the simple principle of nucleon superposition. It provides a more accurate description of the inelastic cross sections, and the emitted spectrum of secondary particles, including isotopes and pions which lead to photons and neutrinos.The model’s impact is shown in simulations of gamma-ray bursts and tidal disruption events, and it affects significantly the high-energy neutrino emission, the chemical composition and the spectrum of the emitted UHECRs. The second model describes photoproduction from de-excitations and decay of unstable nuclei, which are expected to be produced in photo-disintegration of cosmic rays interacting with astrophysical photons. Its impact is illustrated in the photo-emission from the core of the Centaurus A and compared to similar works with which is in disagreement. This supports the need for sufficiently accurate models. Lastly, the photodisintegration of UHECR superheavy nuclei is discussed. An interaction table is produced with cross sections obtained from TALYS and the interaction rates computed in the context of extragalactic propagation. Superheavy nuclei propagate further than lighter nuclei in certain energy ranges. The models developed are publicly available as open-source software.
Wiedemann, Christin. "A search for ultra-high energy neutrinos with AMANDA-II." Doctoral thesis, Stockholm : Physics Department, Stockholm university, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-7151.
Full textSchumacher, Lisa Johanna [Verfasser], Christopher Henrik V. [Akademischer Betreuer] Wiebusch, and Antoine [Akademischer Betreuer] Kouchner. "Search for the common sources of high-energy cosmic neutrinos and ultra-high-energy cosmic rays / Lisa Johanna Schumacher ; Christopher Wiebusch, Antoine Kouchner." Aachen : Universitätsbibliothek der RWTH Aachen, 2021. http://d-nb.info/1238365329/34.
Full textViberg, Fredrik. "Advanced algorithms for Ultra-High-Energy Cosmic Ray Detection with the EUSO-TA Experiment." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-313.
Full textHeimann, Philipp [Verfasser]. "A test for the existence of protons in ultra-high energy cosmic rays / Philipp Heimann." Siegen : Universitätsbibliothek der Universität Siegen, 2018. http://d-nb.info/117520546X/34.
Full textCASTRO, MARY LUCIA DIAZ. "INTRINSIC FLUCTUATIONS OF EXTENSIVE AIR SHOWERS AND THE CHEMICAL COMPOSITION OF ULTRA HIGH ENERGY COSMIC RAYS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19921@1.
Full textO Observatório Pierre Auger é um detector de raios cósmicos ultra-energéticos (E maior ou igual 1018 eV) com características híbridas, que combinam detectores de superfície e de fluorescência. A determinação da composição química primária destes raios cósmicos é um dos seus principais objetivos. Há indícios de que os primários dos raios cósmicos com E maior que 1018.5 eV tem massa maior, conclusão baseada nos resultados recentes sobre a evolução dos chuveiros atmosféricos extensos (cascatas de partículas formadas quando da colisão do raio cósmico primário no topo da atmosfera com moléculas de N2 ou O2). Encontrar parâmetros, que caracterizam o chuveiro, no processo de sua reconstrução e que forneçam informações associadas a este resultado, são essenciais para validar esta conclusão. Nesta tese estuda-se a evolução como função da energia, de parâmetros que caracterizam os chuveiros, que sejam sensíveis à sua composição primária. Mais especificamente aqueles determinados pelo detector de superfície, pois há uma estatística de chuveiros detectados significativamente maior. Damos especial atenção às flutuações intrínsecas – chuveiro-a-chuveiro – do parâmetro de inclinação (beta) da Função de Distribuição Lateral, que descreve a variação da densidade de partículas ao longo da direção perpendicular ao eixo do chuveiro, como função da distância a esse eixo. Os resultados indicam que a flutuação intrínseca em beta, para eventos inclinados (45-60 graus) com E maior que 1018.5 eV, possui uma tendência de diminuição com a energia até valores em torno de 1019.8 eV. Este resultado é consistente com o encontrado anteriormente em análises de composição química sobre a evolução com a energia da profundidade de máximo (Xmax) dos chuveiros atmosféricos extensosmedida pelos detectores do Auger em modo híbrido, em que em energias acima de 1018.5 eV, observase que os chuveiros tendem a atingir seu máximo numa região mais bem definida da atmosfera, levando, por conseguinte, a flutuações menores no sinal no solo.
The Pierre Auger Observatory is an ultra high energy cosmic ray detector (E more than or equal as 1018 eV) which has hybrid characteristics combining surface and fluorescence detectors. Determining the cosmic rays chemical composition is one of its most important challenges. There are evidences that cosmic ray primaries with energy above 1018.5 eV are heavy and this conclusion is based on recent results on the evolution of extensive air showers (cascades of particles formed by the collision of primary cosmic rays in the top of the atmosphere with nitrogen and oxygen molecules). Therefore, it is mandatory to find additional parameters supporting that conclusion. In this thesis, the evolution with energy of parameters characterizing the shower and with sensitivity to chemical composition are studied. More specifically, parameters determined by the surface detector are analyzed due to the high statistics in this operation mode. Special attention is given to the instrinsic - shower to shower - fluctuations of the slope parameter (beta) of the Lateral Distribution Function which describes the particles density variation in the plane perpendicular to the shower axis as a function of distance to that axis. The results show that the intrinsic fluctuation of Beta, for inclined showers (45-60 degrees) with energy above 1018.5 eV, where the detector resolution is small compared to the total fluctuation, has a trend to decrease with energy up to 1019.6 eV. This result is consistent with recent results on the energy evolution of the depth of shower maxima (Xmax) of extensive air showers, where above 1018.5 eV, the distributions of Xmax show less fluctuations, leading, in turn, to less fluctuations on the ground level.
Morejon, Leonel [Verfasser]. "New Interaction Models of Ultra-high-energy Cosmic Rays from a Nuclear Physics Approach / Leonel Morejon." Berlin : Humboldt-Universität zu Berlin, 2021. http://d-nb.info/1230406751/34.
Full textSchulz, Alexander [Verfasser], and J. [Akademischer Betreuer] Blümer. "Measurement of the Energy Spectrum and Mass Composition of Ultra-high Energy Cosmic Rays / Alexander Schulz. Betreuer: J. Blümer." Karlsruhe : KIT-Bibliothek, 2016. http://d-nb.info/1095665456/34.
Full textSchüssler, Fabian. "Measurement of the Energy Spectrum of Ultra-High Energy Cosmic Rays using Hybrid Data of the Pierre Auger Observatory." [S.l. : s.n.], 2008. http://digbib.ubka.uni-karlsruhe.de/volltexte/1000009955.
Full textSchüssler, Fabian. "Measurement of the energy spectrum of ultra-high energy cosmic rays using hybrid data of the Pierre Auger Observatory." Karlsruhe Forschungszentrum Karlsruhe, 2009. http://d-nb.info/995867089/34.
Full textNierstenhoefer, Nils [Verfasser]. "On the Origin and Propagation of Ultra-High Energy Cosmic Rays (Measurements & Prediction Techniques) / Nils Nierstenhoefer." Wuppertal : Universitätsbibliothek Wuppertal, 2011. http://d-nb.info/101622592X/34.
Full textLouedec, Karim. "Atmospheric aerosols at the Pierre Auger Observatory : characterization and effect on the energy estimation for ultra-high energy cosmic rays." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00647476.
Full textWeidenhaupt, Klaus Frank [Verfasser]. "Antenna calibration and energy measurement of ultra-high energy cosmic rays with the Auger Engineering Radio Array / Klaus Frank Weidenhaupt." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2014. http://d-nb.info/1065959966/34.
Full textSchmidt, David [Verfasser], J. [Akademischer Betreuer] Blümer, and A. [Akademischer Betreuer] Etchegoyen. "Sensitivity of AugerPrime to the masses of ultra-high-energy cosmic rays / David Schmidt ; J. Blümer, A. Etchegoyen." Karlsruhe : KIT-Bibliothek, 2019. http://d-nb.info/1184990115/34.
Full textMaurel, Detlef [Verfasser], and J. [Akademischer Betreuer] Blümer. "Mass composition of ultra-high energy cosmic rays based on air shower universality / Detlef Maurel. Betreuer: J. Blümer." Karlsruhe : KIT-Bibliothek, 2013. http://d-nb.info/1044956178/34.
Full textGriffith, Nathan E. "Microwave Detection of Cosmic Rays and Multi-Messenger Analysis of the Parameters of Ultra-High Energy Astrophysical Sources." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429799044.
Full textStapleton, James C. "Ultra-High Energy Cosmic Rays: Composition, Early Air Shower Interactions, and Xmax Skewness." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1431044195.
Full textBlanco, Otano Miguel. "Different approaches to determine the composition of the ultra-high energy cosmic rays in the Pierre Auger Observatory." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066643/document.
Full textThe motivation of this PhD thesis is to improve the capabilities to determine the mass composition of the ultra-high energy cosmic rays in the Pierre Auger Observatory. The measure of their mass composition is done with the fluorescence technique, that needs special luminosity conditions that reduce the exposure time to about 10% of the time. Three different approaches are proposed.The first approach is a new analysis. Muons in the horizontal showers are deviated by the magnetic field of the Earth. This deflection is related with different characteristics of the extensive air shower that allow the construction of an estimator to obtain an alternative measure of Xμmax, an observable sensitive to the mass of the primary.The second approach is to explore the detection of the radio emission produced in the extensive air showers, a technique similar to the fluorescente one, but without the limitations in the duty cycle. The detection of the Molecular Bremsstrahlung Radiation emission is revised and investigated from different points of view.The third approach is to propose a new surface detector that obtains different responses to the different components of the extensive air shower: electromagnetic and muonic. The access to the muonic component is another way to access to the composition of the primary particle.The new method of analysis proposed appears as a promising tool to be applied in any data set. The technique of the radio detection did not show clear indications of being an alternative to traditional techniques. The new detector represents a promising alternative to be considered in any future ultra-high energy cosmic rays experiment
De, Domenico Manlio. "Propagation of Ultra-High Energy Cosmic Rays and anisotropy studies with the Pierre Auger Observatory: the multiscale approach." Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/992.
Full textSchüssler, Fabian [Verfasser]. "Measurement of the energy spectrum of ultra-high energy cosmic rays using hybrid data of the Pierre Auger Observatory / Fabian Schüssler." Karlsruhe : Forschungszentrum Karlsruhe, 2009. http://d-nb.info/995867089/34.
Full textVliet, Arjen René /van [Verfasser], and Günter [Akademischer Betreuer] Sigl. "Propagation of ultra-high-energy cosmic rays and their secondaries with CRPropa / Arjen René van Vliet. Betreuer: Günter Sigl." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2015. http://d-nb.info/1071948229/34.
Full textBridgeman, Ariel [Verfasser], and J. [Akademischer Betreuer] Blümer. "Determining the Mass Composition of Ultra-high Energy Cosmic Rays Using Air Shower Universality / Ariel Bridgeman ; Betreuer: J. Blümer." Karlsruhe : KIT-Bibliothek, 2018. http://d-nb.info/1166234266/34.
Full textKönig, Hampus. "Evaluation of detector Mini-EUSO to study Ultra High-Energy Cosmic Rays and Ultra Violet light emissions observing from the International Space Station." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72552.
Full textBiehl, Daniel. "Nuclear Cascades and Neutrino Production in the Sources of Ultra-High Energy Cosmic Ray Nuclei." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20448.
Full textThe origin of Ultra-High Energy Cosmic Rays (UHECRs) is still one of the most important open questions in astrophysics. Gamma-Ray Bursts (GRBs) were considered as potential sources as they are among the most energetic events known in the Universe. However, conventional GRB scenarios are strongly constrained by astrophysical neutrino data. In addition, cosmic ray composition measurements indicate the presence of heavy nuclei, which would disintegrate if the radiation fields in the source were too dense. In order to circumvent this dilemma, recent studies point towards hidden accelerators, which are intrinsically hard to detect. In this dissertation, we present novel approaches to efficiently and self-consistently calculate the nuclear processes in astrophysical sources. We quantify these interactions by means of the nuclear cascade, which describes the subsequent disintegration of heavy nuclei into lighter fragments. Even in sophisticated source-propagation models, as the ones developed in this thesis, conventional GRBs are in tension with neutrino data. However, we demonstrate that a population of low-luminosity GRBs is not only consistent with current constraints, but can even describe the UHECR spectrum and composition across the ankle as well as neutrino data simultaneously. From our fitting procedure we can further constrain certain source properties, such as the baryonic loading and the event rate. Furthermore, we show that stars disrupted by black holes are viable candidates for a simultaneous description of cosmic ray and PeV neutrino data too. However, they can be discriminated from LLGRBs by cosmogenic neutrinos. Finally, we apply our model to GW170817. We show for different jet scenarios that the expected neutrino flux is orders of magnitude below the sensitivity of current instruments. Nevertheless, binary neutron star mergers could in principle support cosmic rays below the ankle.
Rodrigues, Xavier [Verfasser], Walter [Gutachter] Winter, Anna [Gutachter] Franckowiak, and Markus [Gutachter] Böttcher. "Blazars as Sources of Neutrinos and Ultra-high-energy Cosmic Rays / Xavier Rodrigues ; Gutachter: Walter Winter, Anna Franckowiak, Markus Böttcher." Berlin : Humboldt-Universität zu Berlin, 2019. http://d-nb.info/1198207140/34.
Full textLyberis, Haris. "Study of the ultra-high energy cosmic rays with the Pierre Auger Observatory : towards observations of anisotropies in arrival directions ?" Paris 7, 2011. http://www.theses.fr/2011PA077099.
Full textThis thesis concerns the study anisotropies of UHECRs observed by the Pierre Auger Observatory. R&D was done to increase of the dynamical range of Hamamatsu PMTs using the technique based on the reading out of deeper dynodes, reaching 20 bits. To increase the statistics at high energy, a relax trigger selection was designed to be used in further Auger data analysis. Further, point sources were searched in direction of the Galactic Center and Centaurus A. We also developed a new method for searching for anisotropies without relying on any catalog that provides the clustering scale and an analytical way to compute the chance probability. Using it, we place important limits on the density of sources and the deflections of the extra-galactic cosmic rays. In the low energy range, we performed a first harmonic analysis using a new method to account for detector effects. Upper bounds were given above 1 EeV with an indication of a signal at all energies pointed out by the smooth transition of the phase. Finally, using both a numerical method to solve the diffusion equation in a simplified galactic magnetic field mo-del and Monte Carlo simulations, we compare the resulting anisotropy with the possible one, studying also relaxing some hypothesis (stationary sources, isotropic emission)
Voigt, Bernhard. "Sensitivity of the IceCube detector for ultra-high energy electron-neutrino events." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15850.
Full textIceCube is a neutrino telescope currently under construction in the glacial ice at South Pole. At the moment half of the detector is installed, when completed it will instrument 1 km^3 of ice providing a unique experimental setup to detect high energy neutrinos from astrophysical sources. In this work the sensitivity of the complete IceCube detector for a diffuse electron-neutrino flux is analyzed, with a focus on energies above 1 PeV. Emphasis is put on the correct simulation of the energy deposit of electromagnetic cascades from charged-current electron-neutrino interactions. Since existing parameterizations lack the description of suppression effects at high energies, a simulation of the energy deposit of electromagnetic cascades with energies above 1 PeV is developed, including cross sections which account for the LPM suppression of bremsstrahlung and pair creation. An attempt is made to reconstruct the direction of these elongated showers. The analysis presented here makes use of the full charge waveform recorded with the data acquisition system of the IceCube detector. It introduces new methods to discriminate efficiently between the background of atmospheric muons, including muon bundles, and cascade signal events from electron-neutrino interactions. Within one year of operation of the complete detector a sensitivity of 1.5*10^-8 E^-2 GeV/(cm^2 sr s) is reached, which is valid for a diffuse electron-neutrino flux in the energy range from 16 TeV to 13 PeV. Including all neutrino flavors in this analysis, an improvement of at least one order of magnitude is expected, reaching the anticipated performance of a diffuse muon analysis.
Lauscher, Markus Verfasser], Thomas [Akademischer Betreuer] Hebbeker, and Christopher Henrik V. [Akademischer Betreuer] [Wiebusch. "Search for the sources of ultra-high energy cosmic rays with the Pierre Auger Observatory / Markus Lauscher ; Thomas Hebbeker, Christopher Wiebusch." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1156922259/34.
Full textHalliday, Robert Paul. "Electronics and Timing for the AugerPrime Upgrade and Correlation of Starburst Galaxies with Arrival Directions of Ultra High Energy Cosmic Rays." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1553599216169462.
Full textLauscher, Markus [Verfasser], Thomas Akademischer Betreuer] Hebbeker, and Christopher Henrik V. [Akademischer Betreuer] [Wiebusch. "Search for the sources of ultra-high energy cosmic rays with the Pierre Auger Observatory / Markus Lauscher ; Thomas Hebbeker, Christopher Wiebusch." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1156922259/34.
Full textFenu, Francesco [Verfasser], and Andrea [Akademischer Betreuer] Santangelo. "A Simulation Study of the JEM-EUSO Mission for the Detection of Ultra-High Energy Cosmic Rays / Francesco Fenu ; Betreuer: Andrea Santangelo." Tübingen : Universitätsbibliothek Tübingen, 2013. http://d-nb.info/1162896736/34.
Full textCollica, L. "MASS COMPOSITION STUDIES OF ULTRA HIGH ENERGY COSMIC RAYS THROUGH THE MEASUREMENT OF THE MUON PRODUCTION DEPTHS AT THE PIERRE AUGER OBSERVATORY." Doctoral thesis, Università degli Studi di Milano, 2014. http://hdl.handle.net/2434/252009.
Full textZimmermann, Benedikt Hermann [Verfasser], and M. [Akademischer Betreuer] Weber. "Radio-detection of ultra-high energy cosmic rays: multi-channel data acquisition and combined analysis of timing and energy information / Benedikt Hermann Zimmermann ; Betreuer: M. Weber." Karlsruhe : KIT-Bibliothek, 2017. http://d-nb.info/1143026993/34.
Full textHeinze, Jonas. "Ultra-high-energy cosmic-ray nuclei and neutrinos in models of gamma-ray bursts and extragalactic propagation." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/21386.
Full textUltra-high-energy cosmic rays (UHECRs) are the most energetic particles observed in the Universe. While the astrophysical sources of UHECRs have not yet been uniquely identified, there are strong indications for an extragalactic origin. The interpretation of the observations requires both simulations of UHECR acceleration and energy losses inside the source environment as well as interactions during extragalactic propagation. Due to their extreme energies, UHECR will interact with photons in these environments, producing a flux of secondary neutrinos. This dissertation deals with models of UHECR sources and the accompanying neutrino production in the source environment and during extragalactic propagation. We have developed a new, computationally efficient code, PriNCe, for the extragalactic propagation of UHECR nuclei. The PriNCe code is applied for an extensive parameter scan of a generic source model that is described by the spectral index, the maximal rigidity, the cosmological source evolution and the injected mass composition. In this scan, we demonstrate the impact of different disintegration and air-shower models on the inferred source properties. A prediction for the expected flux of cosmogenic neutrinos is also derived. GRBs are discussed as specific UHECR source candidates in the multi-collision internal-shock model. This model takes the radiation from different radii in the GRB outflow into account. We demonstrate how different assumptions about the initial setup of the jet and the hydrodynamic collision model impact the production of UHECRs and neutrinos. Motivated by the multi-messenger observation of GRB170817A, we discuss the expected neutrino production from this GRB and its dependence on the observation angle. We show that the neutrino flux for this event is at least four orders of magnitude below the detection limit for different geometries of the plasma jet.