Ultra High Energy Cosmic Ray Composition
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Ultra High Energy Cosmic Ray Composition
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Author : Nathaniel Peter Longley
language : en
Publisher:
Release Date : 1993
Ultra High Energy Cosmic Ray Composition written by Nathaniel Peter Longley and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
A Study Of Ultra High Energy Cosmic Ray Composition And Hadronic Interactions With Data From The Pierre Auger Observatory
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Author : Florin Ioniță
language : en
Publisher:
Release Date : 2011
A Study Of Ultra High Energy Cosmic Ray Composition And Hadronic Interactions With Data From The Pierre Auger Observatory written by Florin Ioniță and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Ultra-high energy cosmic rays are particles of enormous energy -- greater than 1018 eV -- reaching Earth from still mysterious sources. In this thesis, we analyze data from the Pierre Auger Observatory, a giant cosmic ray detector located in Argentina, to derive information on the mass of ultra-high energy cosmic rays and on their hadronic interaction properties. The data show a change of cosmic ray mass composition as a function of energy. We perform a measurement of the proton-air inelastic cross section, yielding sinelp-air =501+24-23 stat+30 -35syst +30-32 composition mb, at an equivalent energy of 57 TeV in the center of mass of a proton-proton collision -- a range yet inaccessible to particle accelerators. The measured cross section is in good agreement with predictions from hadronic interaction models.
Introduction To Ultrahigh Energy Cosmic Ray Physics
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Author : Pierre Sokolsky
language : en
Publisher: CRC Press
Release Date : 2020-10-26
Introduction To Ultrahigh Energy Cosmic Ray Physics written by Pierre Sokolsky and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-26 with Science categories.
This revised edition provides an up-to-date summary of the field of ultra-high energy cosmic rays, dealing with their origin, propagation, and composition,. The authors reflect the enormous strides made since the first edition in the realm of experimental work, in particular the use of vastly improved, more sensitive and precise detectors. The level remains introductory and pedagogical, suitable for students and researchers interested in moving into this exciting field. Throughout the text, the authors focus on giving an introductory overview of the key physics issues, followed by a clear and concise description of experimental approaches and current results. Key Features: Updates the most coherent summary of the field available, with new text that provides the reader with clear historical context. Brand new discussion of contemporary space-based experiments and ideas for extending ground-based detectors. Completely new discussion of radio detection methods. Includes a new chapter on small to intermediate-scale anisotropy. Offers new sections on modern hadronic models and software packages to simulate showers.
Mass Composition Studies Of Ultra High Energy Cosmic Rays Through The Measurement Of The Muon Production Depths At The Pierre Auger Observatory
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Author : Laura Collica
language : en
Publisher:
Release Date : 2014
Mass Composition Studies Of Ultra High Energy Cosmic Rays Through The Measurement Of The Muon Production Depths At The Pierre Auger Observatory written by Laura Collica and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
The Pierre Auger Observatory studies Ultra High Energy Cosmic Rays (UHECRs) physics. The flux of UHECRs is very low (less than 1 particle/km2-year) and their properties must be inferred from the measurements of the secondary particles that the cosmic ray primary produces in the atmosphere. These particles cascades are called Extensive Air Showers (EAS) and can be studied at ground by deploying detectors covering large areas. The EAS physics is complex, and the properties of secondary particles depend strongly on the first interaction, which takes place at an energy beyond the ones reached at accelerators. As a consequence, the analysis of UHECRs is subject to large uncertainties and hence many of their properties, in particular their composition, are still unclear. Two complementary techniques are used at Auger to detect EAS initiated by UHECRs: a 3000 km2 surface detector (SD) array of water Cherenkov tanks which samples particles at ground level and fluorescence detectors (FD) which collect the ultraviolet light emitted by the de-excitation of nitrogen nuclei in the atmosphere, and can operate only in clear, moonless nights. The main goal of this thesis is the measurement of UHECR mass composition using data from the SD of the Pierre Auger Observatory. Measuring the cosmic ray composition at the highe-st energies is of fundamental importance for particle physics and astrophysics. Indeed, it allows to explore the hadronic interactions at ultra-high energies, and to discriminate between different scenarios of origin and propagation of cosmic rays.
Mass Composition Studies Of Ultra High Energy Cosmic Rays Through The Measurement Of The Muon Production Depths At The Pierre Auger Observatory
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Author :
language : en
Publisher:
Release Date : 2014
Mass Composition Studies Of Ultra High Energy Cosmic Rays Through The Measurement Of The Muon Production Depths At The Pierre Auger Observatory written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
The Pierre Auger Observatory (Auger) in Argentina studies Ultra High Energy Cosmic Rays (UHECRs) physics. The flux of cosmic rays at these energies (above 1018 eV) is very low (less than 100 particle/km2-year) and UHECR properties must be inferred from the measurements of the secondary particles that the cosmic ray primary produces in the atmosphere. These particles cascades are called Extensive Air Showers (EAS) and can be studied at ground by deploying detectors covering large areas. The EAS physics is complex, and the properties of secondary particles depend strongly on the first interaction, which takes place at an energy beyond the ones reached at accelerators. As a consequence, the analysis of UHECRs is subject to large uncertainties and hence many of their properties, in particular their composition, are still unclear. Two complementary techniques are used at Auger to detect EAS initiated by UHE- CRs: a 3000 km2 surface detector (SD) array of water Cherenkov tanks which samples particles at ground level and fluorescence detectors (FD) which collect the ultraviolet light emitted by the de-excitation of nitrogen nuclei in the atmosphere, and can operate only in clear, moonless nights. Auger is the largest cosmic rays detector ever built and it provides high-quality data together with unprecedented statistics. The main goal of this thesis is the measurement of UHECR mass composition using data from the SD of the Pierre Auger Observatory. Measuring the cosmic ray composition at the highest energies is of fundamental importance from the astrophysical point of view, since it could discriminate between different scenarios of origin and propagation of cosmic rays. Moreover, mass composition studies are of utmost importance for particle physics. As a matter of fact, knowing the composition helps in exploring the hadronic interactions at ultra-high energies, inaccessible to present accelerator experiments.
Introduction To Ultrahigh Energy Cosmic Ray Physics
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Author : Pierre Sokolsky
language : en
Publisher: Westview Press
Release Date : 2004
Introduction To Ultrahigh Energy Cosmic Ray Physics written by Pierre Sokolsky and has been published by Westview Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Science categories.
In one compact - and now updated - volume, this text provides a basic introduction to ultrahigh energy cosmic rays, recognized today as an important area of study between high energy physics and astrophysics.
Ultra High Energy Cosmic Rays
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Author : James Stapleton
language : en
Publisher:
Release Date : 2015
Ultra High Energy Cosmic Rays written by James Stapleton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
The composition of Ultra-High Energy Cosmic Rays (UHECRs) is still not completely understood, and must be inferred from Extended Air Shower (EAS), particle cascades which they initiate upon entering the atmosphere. The atmospheric depth at which the shower contains the maximum number of particles (Xmax) is the most composition-sensitive property of the air shower, but its interpretation is hindered by intrinsic statistical fluctuations in EAS development (which cause distinct compositions to produce overlapping Xmax distributions) as well as our limited knowledge at these energies of hadronic physics (which strongly impacts the Xmax distribution's shape). These issues ultimately necessitate a variety of complementary approaches to interpreting UHECR composition from Xmax data.
Composition Studies Of Ultra High Energy Cosmic Rays Using Data Of The Pierre Auger Observatory
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Author : Karen Salomé Caballero Mora
language : en
Publisher:
Release Date : 2010
Composition Studies Of Ultra High Energy Cosmic Rays Using Data Of The Pierre Auger Observatory written by Karen Salomé Caballero Mora and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Measurement Of The Mass Composition Of The Highest Energy Cosmic Rays With The Pierre Auger Observatory
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Author : Alexander Edward Hervé
language : en
Publisher:
Release Date : 2013
Measurement Of The Mass Composition Of The Highest Energy Cosmic Rays With The Pierre Auger Observatory written by Alexander Edward Hervé and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Cosmic rays categories.
The origin of ultra high energy cosmic rays is one of the big unsolved questions in Astrophysics today. Knowing the mass composition of these cosmic rays would help to determine information about both their propagation and acceleration. The Pierre Auger Observatory was built to gather more information and more statistics than any previous cosmic ray detector ever built. In this thesis, I will detail my method of extending the current Pierre Auger mass composition information by using surface array parameters as a proxy for the depth of shower maximum, an established mass indicator.
The Intergalactic Propagation Of Ultrahigh Energy Cosmic Ray Nuclei
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Author :
language : en
Publisher:
Release Date : 2006
The Intergalactic Propagation Of Ultrahigh Energy Cosmic Ray Nuclei written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
We investigate the propagation of ultra-high energy cosmic ray nuclei (A = 1-56) from cosmologically distant sources through the cosmic radiation backgrounds. Various models for the injected composition and spectrum and of the cosmic infrared background are studied using updated photodisintegration cross-sections. The observational data on the spectrum and the composition of ultra-high energy cosmic rays are jointly consistent with a model where all of the injected primary cosmic rays are iron nuclei (or a mixture of heavy and light nuclei).