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The Role Of Chaos And Magnetic Fields In The Cosmic Ray Anisotropy
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Book Synopsis The Role of Chaos and Magnetic Fields in the Cosmic Ray Anisotropy by : Vanessa Maria López Barquero (Ph., D)
Download or read book The Role of Chaos and Magnetic Fields in the Cosmic Ray Anisotropy written by Vanessa Maria López Barquero (Ph., D) and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cosmic rays are detected on Earth with an energy-dependent anisotropy in their arrival direction. Recent experimental results of this arrival distribution of high-energy cosmic rays (CRs) have motivated studies aimed at improving our understanding of the cosmic ray transport and their propagating media. This arrival distribution involves a convolution of the distribution of sources and the effects of the magnetic field properties through which particles propagate. Nonetheless, no comprehensive explanation has been put forth to date. Understanding what causes this cosmic-ray anisotropy and how we can use it to learn about the characteristics of the media they traverse are the central questions of this thesis. More specifically, this dissertation will explore the effects of magnetic fields and various magnetic structures on the anisotropy of arriving CRs from TeV to PeV scales. These contributions can impact the largest angular scale to the medium- and small-scale angular structures. This investigation centers around the effects of three physical processes: one on the chaotic behavior in coherent magnetic structures, another one on magnetic turbulence, and a third on heliospheric effects First, we detail the effects of chaos and trapping in coherent structures on the CR propagation. We apply a new method to characterize chaotic trajectories in bound systems. This method is based on the Finite-Time Lyapunov Exponent (FTLE), which determines the degree of chaos in the particles' trajectories. Furthermore, we model a coherent magnetic structure with time-perturbations that can be used to describe distinct magnetic systems and processes. Our results show that the FTLE, i.e., the level of chaos, is related to the CRs escape time from the system by a power-law relation. Additionally, this power law persists even if perturbations act on the system, pointing to the idea that this specific power law could be an essential parameter of the system. We also find that CRs can be divided into different categories according to their chaotic behavior. Moreover, these categories are distributed in specific regions in the arrival distribution maps. This means that various regions on the map could develop differently from one to another in time. Therefore, this result can provide the basis for time-variability in the CR arrival direction maps. We also discuss how turbulence in the interstellar medium can modify CR trajectories. To investigate this idea, we perform numerical integration of particle trajectories in compressible magnetohydrodynamic turbulence to study how the CRs arrival direction distribution is perturbed when streamed along the local turbulent magnetic field. We found that this inhomogeneous and turbulent interstellar magnetic field can imprint its structure on the CR maps. Another aspect explored is the heliospheric influence on particles with rigidities in the range of 1-10 TV. We test if anisotropies may arise from the interaction with the heliosphere. We employed a magnetic field model of the heliosphere for this goal and performed forward-propagating numerical calculations of particle trajectories. Our results show that the heliosphere can strongly redistribute the particles' directions, making it an indispensable component for the anisotropy. Finally, through these magnetic structures and mechanisms, we can learn about how CRs propagate and their arrival distribution. However, these particles can also act as probes for the properties of the different media they traverse and their places of origin. Therefore, the study of cosmic rays opens multiple doors for a better understanding of the universe.
Book Synopsis Anisotropy of the Cosmic-ray Flux Caused by an Interplanetary Magnetic Field by : Ronald Rice Harrington
Download or read book Anisotropy of the Cosmic-ray Flux Caused by an Interplanetary Magnetic Field written by Ronald Rice Harrington and published by . This book was released on 1962 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Simple Model of the Interplanetary Magnetic Field. Part 2: The Cosmic Ray Anisotropy by : United States. National Aeronautics and Space Administration
Download or read book A Simple Model of the Interplanetary Magnetic Field. Part 2: The Cosmic Ray Anisotropy written by United States. National Aeronautics and Space Administration and published by . This book was released on 1964 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atoms in Strong Magnetic Fields by : Hanns Ruder
Download or read book Atoms in Strong Magnetic Fields written by Hanns Ruder and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: A clear and accessible introduction to quantum mechanical methods used to calculate properties of atoms exposed to strong magnetic fields in both laboratory and stellar environments, with the emphasis on hydrogen and helium and their isoelectronic sequences. The results of the detailed calculations are listed in tables, making it a useful handbook for astrophysicists and atomic physicists alike.
Book Synopsis Matter, Anti-matter And Dark Matter, Proceedings Of The Second International Workshop by : Roberto Battiston
Download or read book Matter, Anti-matter And Dark Matter, Proceedings Of The Second International Workshop written by Roberto Battiston and published by World Scientific. This book was released on 2002-08-30 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the progress in cosmic ray physics following the recent results obtained by balloon, satellite and underground experiments. The following topics are reviewed: Composition and propagation of cosmic rays, trapping of charged particles in the earth's magnetic field, atmospheric neutrinos, and high energy photon measurements in space.
Book Synopsis Astrophysical Magnetic Fields by : Anvar Shukurov
Download or read book Astrophysical Magnetic Fields written by Anvar Shukurov and published by Cambridge University Press. This book was released on 2021-12-16 with total page 641 pages. Available in PDF, EPUB and Kindle. Book excerpt: This self-contained introduction to astrophysical magnetic fields provides a comprehensive review of the current state of the field and a critical discussion of the latest research. Its emphasis on results that are likely to form the basis for future progress benefits a broad audience of advanced students and active researchers.
Book Synopsis Galactic and Intergalactic Magnetic Fields by : Ulrich Klein
Download or read book Galactic and Intergalactic Magnetic Fields written by Ulrich Klein and published by Springer. This book was released on 2014-11-05 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: This course-tested textbook conveys the fundamentals of magnetic fields and relativistic plasma in diffuse cosmic media, with a primary focus on phenomena that have been observed at different wavelengths. Theoretical concepts are addressed wherever necessary, with derivations presented in sufficient detail to be generally accessible. In the first few chapters the authors present an introduction to various astrophysical phenomena related to cosmic magnetism, with scales ranging from molecular clouds in star-forming regions and supernova remnants in the Milky Way, to clusters of galaxies. Later chapters address the role of magnetic fields in the evolution of the interstellar medium, galaxies and galaxy clusters. The book is intended for advanced undergraduate and postgraduate students in astronomy and physics and will serve as an entry point for those starting their first research projects in the field.
Book Synopsis Cosmic Ray Propagation in Turbulent Galactic Magnetic Fields by : Amit Seta
Download or read book Cosmic Ray Propagation in Turbulent Galactic Magnetic Fields written by Amit Seta and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cosmic Ray Trajectories in Local Magnetic Fields by : Michael J. Gouge
Download or read book Cosmic Ray Trajectories in Local Magnetic Fields written by Michael J. Gouge and published by . This book was released on 1973 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several investigators have noticed sidereal and diurnal variations in the cosmic ray flux reaching the earth. The latter may be explained by periodic changes in the interplanetary magnetic field. The sidereal variations could possibly be produced by discrete galactic sources of cosmic ray particles. In order to investigate this effect the trajectories of 10 GEV particles arriving at the earth vertically at Annapolis, Maryland were numerically traced back through the terrestrial and interplanetary magnetic fields. It is found that the trajectory of an experimental maximum flux at 19 hours RA extrapolates backwards to the general direction of the galactic center for a variety of interplanetary sector magnetic field configurations. This indicates that discrete sources, most of which are located at the galactic center, could be responsible for the sidereal variations and the observed maximum flux at 19 hours RA. These results further suggest that the interplanetary magnetic field is not a randomizing field, as several previous investigators have indicated. (Author).
Author :Astronomisches Recheninstitut Publisher :Springer Science & Business Media ISBN 13 :3662123797 Total Pages :1456 pages Book Rating :4.6/5 (621 download)
Book Synopsis Literature 1992, Part 1 by : Astronomisches Recheninstitut
Download or read book Literature 1992, Part 1 written by Astronomisches Recheninstitut and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 1456 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Astronomy and Astrophysics Abstracts" appearing twice a year has become oneof the fundamental publications in the fields of astronomy, astrophysics andneighbouring sciences. It is the most important English-language abstracting journal in the mentioned branches. The abstracts are classified under more than a hundred subject categories, thus permitting a quick survey of the whole extended material. The AAA is a valuable and important publication for all students and scientists working in the fields of astronomy and related sciences. As such it represents a necessary ingredient of any astronomical library all over the world.
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1994 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cosmic Ray Propagation and Magnetic Fields in Nearby Star-forming Galaxies, with Emphasis on the Prototypical Case of M82 by :
Download or read book Cosmic Ray Propagation and Magnetic Fields in Nearby Star-forming Galaxies, with Emphasis on the Prototypical Case of M82 written by and published by . This book was released on 2013 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Japanese Science and Technology by :
Download or read book Japanese Science and Technology written by and published by . This book was released on 1986 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Inter-relationship of Cosmic Ray Anisotropies and the Interplanetary Magnetic Field by : Kenneth G. McCracken
Download or read book The Inter-relationship of Cosmic Ray Anisotropies and the Interplanetary Magnetic Field written by Kenneth G. McCracken and published by . This book was released on 1967 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geomagnetism, Aeronomy and Space Weather by : Mioara Mandea
Download or read book Geomagnetism, Aeronomy and Space Weather written by Mioara Mandea and published by Cambridge University Press. This book was released on 2019-11-14 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: An interdisciplinary review of research in geomagnetism, aeronomy and space weather, written by eminent researchers from these fields.
Book Synopsis Nonlinear Perturbation Theoryfor Cosmic Ray Propagation in Random Magnetic Fields by : Heinrich J. Völk
Download or read book Nonlinear Perturbation Theoryfor Cosmic Ray Propagation in Random Magnetic Fields written by Heinrich J. Völk and published by . This book was released on 1973 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Magnetic Fields and Cosmic Ray Transport in Edge-on Spiral Galaxies from the CHANG-ES Sample by : Yelena Stein
Download or read book Magnetic Fields and Cosmic Ray Transport in Edge-on Spiral Galaxies from the CHANG-ES Sample written by Yelena Stein and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
