Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"air showers"”.
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The Cerenkov effect in cosmic ray air showers
Thesis (B.S.) Massachusetts Institute of Technology. Dept. of Physics, 1956.
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Properties of extensive air showers around 10(17) eV
2516 quality extensive air showers (EAS) were observed in coincidence using the HIRES nitrogen fluorescence detector and the CASA-MIA ground array within the energy range 10(16.7)-10(17.9) eV. Arrival direction, energy, location of muon content, and Xmax were determined for each event. A …
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Radio emission of air showers : the perspective of LOFAR and AERA
Contains fulltext : 129668.pdf (Publisher’s version ) (Open Access)
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Characteristics of High Energy Particle Interactions from the Study of Irregular Air Showers
… ray experiment ever constructed. It records air shower data from the interactions of primary cosmic ray particles with energies from 10<sup>18</sup>eV to beyond 10<sup>20</sup>eV. The interaction energies of these events exceed the LHC at CERN by one to two orders of magnitude. I have …
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Measurement of the ultra high energy cosmic ray flux from data of very inclined showers at the Pierre Auger Observatory
… energy cosmic rays from data of very inclined air showers observed with the Pierre Auger Observatory. The Pierre Auger Observatory measures extensive air showers initiated by interactions of ultra-high energy cosmic rays with Earth's atmosphere. The properties of individual cosmic rays are not …
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Study of the performances of the AMIGA muon detectors of the Pierre Auger Observatory
… of the muonic component of the extensive air showers (EAS), and the possibility to study the transition between the galactic and the extragalactic component of high energy cosmic rays. The number of muons in extensive air showers reflects the composition of the primary cosmic rays which …
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Stabilizing energy reconstructions of the surface detector at the Pierre Auger Observatory
… through indirect measurements of the extensive air showers they induce. Accordingly, an energy reconstruction process must be undertaken. For the surface detector, the models utilized for energy reconstruction are empirical approximations of the true particle distribution and thus, different …
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Simulating the EUSO-SPB2 balloon flight train with Lagrangian mechanics
… the Earth's limb to observe extensive air showers and tau neutrinos backgrounds. Rotating the Cherenkov telescope induces motion in the gondola. If motion in the gondola exceeds the 0.1\degree resolution requirement, data may be affected. This thesis analyzes and simulates this …
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Design, Implementation and First Results of the ANITA-HiCal Experiment
… emission of in-ice and atmospheric particle showers initiated, respectively, by these two types of particles. Radio detection of ultra-high energy cosmic ray (UHECR) extensive air showers (EAS) above the Antarctic continent has been demonstrated by the four flights of the ANITA experiment. …
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Extreme universe space observatory on a super pressure balloon II fluorescence telescope on the ground and (briefly) in the air, The
… energy cosmic ray (UHECR) induced extensive air showers (EAS) via nitrogen fluorescence by observing a large volume of atmosphere from above. In the years prior to launch, the design of the FT was informed by extensive end-to-end simulations of EAS and the detector response to them. Using …
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A hybrid analysis approach to the high energy stereoscopic system phase II mono-analysis
… light (CL) produced by particles in extensive air showers which are produced by incident high energy particles (gamma rays or cosmic rays) on the Earth's atmosphere. The array consists of four 107 m2 optical telescopes and a larger 614 m2 collective surface area telescope in the center of the …
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FROM DATA PRODUCTION TO SEARCH FOR GALACTIC COSMICRAY SOURCES WITH THE PIERRE AUGER OBSERVATORY
… These particles are detected through extensive air showers, cascades of secondary particles produced when UHECRs interact with the Earth's atmosphere. However, their low flux, less than one particle per square kilometer per century, makes detection extremely challenging. This PhD thesis, titled …
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Crab flare observations with H.E.S.S. phase II
… the relevant parameters that describe the air shower best, a pixel-wise log-likelihood fit is done. The adaptation of this advanced shower reconstruction technique to the heterogeneous H.E.S.S. Phase II array for stereo events (i.e. air showers seen by at least two telescopes of any kind), …
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A Blind Search for Bursts of Very High Energy Gamma Rays with Milagro
… detector that observes the extended air showers produced by cosmic gamma rays of energies E>100GeV. The effective area of Milagro peaks at energies E>10TeV, however it is still large even down to a few hundred GeV (~10m^2 at 100GeV). The wide field of view (~2sr) and high duty cycle …
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Targets of opportunity source catalog, prioritization, scheduler and related mechanics for the EUSO-SPB2 mission, The
… exit the Earth and decay to initiate extensive air showers (EASs). Below PeV energies, ground-based detectors such as IceCube and ANTARES have utilized km3-scale mediums to observe these EASs via their optical Cherenkov emissions. However, at higher energies, much of the sky becomes inaccessible …
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A Search for Muon Neutrinos from Gamma-Ray Bursts wih the IceCube 22-String Detector
… in IceCube is muons generated in cosmic-ray air-showers in the atmosphere above the detector. Atmospheric neutrinos make up a separate irreducible background to the detection of extraterrestrial neutrinos. A binned stacked search of 41 bursts occuring in the northern hemisphere greatly …
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Search for cosmic-ray antiparticles with bolloon-borne and space-borne experiments
This thesis discusses two different approaches for the measurement of cosmic-ray antiparticles in the GeV to TeV energy range. The first part studies the prospects of antiparticle flux measurements with the proposed PEBS detector. The project allots long duration balloon flights at one of Earth's …