Nonlinear Cosmic Ray Diffusion Theories

Author : Andreas Shalchi
Publisher : Springer Science & Business Media
ISBN 13 : 3642003095
Total Pages : 210 pages
Book Rating : 4.97/5 ( download)

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Download or read book Nonlinear Cosmic Ray Diffusion Theories written by Andreas Shalchi and published by Springer Science & Business Media. This book was released on 2009-06-04 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: If charged particles move through the interplanetary or interstellar medium, they interact with a large-scale magnetic ?eld such as the magnetic ?eld of the Sun or the Galactic magnetic ?eld. As these background ?elds are usually nearly constant in time and space, they can be approximated by a homogeneous ?eld. If there are no additional ?elds, the particle trajectory is a perfect helix along which the par- cle moves at a constant speed. In reality, however, there are turbulent electric and magnetic?elds dueto the interstellaror solar wind plasma. These ?elds lead to sc- tering of the cosmic rays parallel and perpendicular to the background ?eld. These scattering effects, which usually are of diffusive nature, can be described by s- tial diffusion coef?cients or, alternatively, by mean free paths. The knowledge of these parameters is essential for describing cosmic ray propagation as well as d- fusive shock acceleration. The latter process is responsible for the high cosmic ray energies that have been observed. The layout of this book is as follows. In Chap. 1, the general physical scenario is presented. We discuss fundamental processes such as cosmic ray propagation and acceleration in different systems such as the solar system or the interst- lar space. These processes are a consequence of the interaction between charged cosmic particles and an astrophysical plasma (turbulence). The properties of such plasmas are therefore the subject of Chap. 2.

Author : Thomas Joseph Birmingham
Publisher :
ISBN 13 :
Total Pages : 34 pages
Book Rating : 4.48/5 ( download)

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Download or read book Cosmic Ray Diffusion written by Thomas Joseph Birmingham and published by . This book was released on 1975 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Topics discussed and summarized are: cosmic ray measurements as related to diffusion theory; quasi-linear theory, nonlinear theory, and computer simulation of cosmic ray pitch-angle diffusion; and magnetic field fluctuation measurements as related to diffusion theory.

Author : Gary P. Zank
Publisher : Springer
ISBN 13 : 1461484804
Total Pages : 296 pages
Book Rating : 4.06/5 ( download)

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Download or read book Transport Processes in Space Physics and Astrophysics written by Gary P. Zank and published by Springer. This book was released on 2013-10-19 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Transport Processes in Space Physics and Astrophysics” is aimed at graduate level students to provide the necessary mathematical and physics background to understand the transport of gases, charged particle gases, energetic charged particles, turbulence, and radiation in an astrophysical and space physics context. Subjects emphasized in the work include collisional and collisionless processes in gases (neutral or plasma), analogous processes in turbulence fields and radiation fields, and allows for a simplified treatment of the statistical description of the system. A systematic study that addresses the common tools at a graduate level allows students to progress to a point where they can begin their research in a variety of fields within space physics and astrophysics. This book is for graduate students who expect to complete their research in an area of plasma space physics or plasma astrophysics. By providing a broad synthesis in several areas of transport theory and modeling, the work also benefits researchers in related fields by providing an overview that currently does not exist. For numerous interesting and challenging space physics and astrophysics problems, there is a need to describe the “long-term” behavior of systems governed by macroscopic laws and microscopic randomness. A random event has an outcome that is uncertain and unpredictable, yet the collective behavior of a system can be governed by well defined mathematical and physical principles. Examples of physical problems include the behavior of gases in the presence of microscopic inter-particle collisions, the evolution of a gas of charged protons and electrons (a plasma), the collective propagation of solar energetic particles or cosmic rays in a magnetically turbulent medium, the collective behavior of dust in an accretion disk subject to coagulation and destruction, the evolution of low-frequency magnetic field turbulence in the inhomogeneous solar wind, or the transport of photos in a partially ionized interstellar medium. This book provides graduate students with a unified introduction to the physics of collective phenomena or transport processes for gases (charged and uncharged), fields, and photons in a space physics or astrophysics context.

Author : F.A. Aharonian
Publisher : IOS Press
ISBN 13 : 1643685139
Total Pages : 448 pages
Book Rating : 4.37/5 ( download)

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Download or read book Foundations of Cosmic Ray Astrophysics written by F.A. Aharonian and published by IOS Press. This book was released on 2024-04-23 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Enrico Fermi Schools, a cultural initiative promoted by the Italian Physical Society (SIF), were initiated in 1953 in a period that marked the beginnings of what is now called cosmic ray astrophysics. Indeed, the very first edition of the School focused on the contribution of cosmic ray physics to the laws of elementary particle physics. Almost seventy years later, another School has been focusing on the foundations of cosmic ray astrophysics, and this book contains the lectures presented as Course 208 of the prestigious International School of Physics Enrico Fermi, Foundations of Cosmic Ray Astrophysics, held in Varenna, Italy from 23 to 29 June 2022. Topics covered in the book range from particle acceleration to cosmic ray transport, and from radiation processes to feedback of cosmic rays in galaxy formation. In particular, a thorough description of the physics of cosmic ray transport in turbulent magnetic fields, and of the production of magnetic perturbations in the presence of cosmic ray gradients is provided, both these phenomena being essential in describing particle acceleration at shocks and the transport of cosmic rays within the galaxy. The transport of cosmic rays in different environments is also discussed. This area of research has received an extraordinary boost in recent times, thanks to the now unprecedented accuracy of observations, and to the possibility of testing new ideas and complex scenarios offered by recent developments in numerical simulation, and the book will be of interest to all those working in the field of high energy astrophysics.

Author : Stephen Rosen
Publisher :
ISBN 13 :
Total Pages : 452 pages
Book Rating : 4.59/5 ( download)

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Download or read book Selected Papers on Cosmic Ray Origin Theories written by Stephen Rosen and published by . This book was released on 1969 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Lev Dorman
Publisher : Springer Science & Business Media
ISBN 13 : 1402051018
Total Pages : 877 pages
Book Rating : 4.12/5 ( download)

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Download or read book Cosmic Ray Interactions, Propagation, and Acceleration in Space Plasmas written by Lev Dorman and published by Springer Science & Business Media. This book was released on 2006-09-02 with total page 877 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 1 briefly describes the main properties of space plasmas and primary CR. Chapter 2 considers the problem of CR propagation in space plasmas described by the kinetic equation and different types of diffusion approximations. Chapter 3 is devoted to CR non-linear effects in space plasmas caused by CR pressure and CR kinetic stream instabilities with the generation of Alfvèn turbulence. In Chapter 4 different processes of CR acceleration in space plasmas are considered. The book ends with a list providing more than 1,300 full references, a discussion on future developments and unsolved problems, as well as Object and Author indexes.

Author : J.W. Bieber
Publisher : Springer Science & Business Media
ISBN 13 : 9401711879
Total Pages : 405 pages
Book Rating : 4.76/5 ( download)

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Download or read book Cosmic Rays and Earth written by J.W. Bieber and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: The year 1998 marked the 50th anniversary of the invention of the neutron monitor, a key research tool in the field of space physics and solar-terrestrial relations. In honor of this occasion a workshop entitled 'Cosmic Rays and Earth' was organized to review the detection of cosmic rays at the surface and in the lower atmosphere of Earth, including the effect that this radiation has on the terrestrial environment. A special focus was the role of neutron monitors in the investigation of this radiation, on the science enabled by the unique dataset of the worldwide network of neutron monitors, and on continuing opportunities to use these data to solve outstanding problems. This book is the principal product of that workshop, integrating the contribu tions of all participants. Following a general summary of the workshop prepared by the editors, the volume leads off with a keynote article by Professor John Simpson describing his invention of the neutron monitor in 1948 and the early scientific discoveries made with this instrument.

Author :
Publisher : American Geophysical Union
ISBN 13 :
Total Pages : 523 pages
Book Rating : 4./5 ( download)

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Download or read book Physics of Solar Planetary Environments: Vols. I & II written by and published by American Geophysical Union. This book was released on with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Dastgeer Shaikh
Publisher : AIP Conference Proceedings / A
ISBN 13 :
Total Pages : 454 pages
Book Rating : 4.14/5 ( download)

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Download or read book Turbulence and Nonlinear Processes in Astrophysical Plasmas written by Dastgeer Shaikh and published by AIP Conference Proceedings / A. This book was released on 2007-09-27 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the peer-reviewed papers presented at the Sixth Annual International Astrophysics Conference. This conference brought together a range of topics that shed light on our understanding and status of turbulence and nonlinear processes in astrophysical plasmas. Coverage in this volume includes turbulent relaxation in laboratory and space plasmas and its application to coronal flux tubes, coronal heating, and the diffusion of energetic particles.

Author : Günter Sigl
Publisher : Springer
ISBN 13 : 9462392439
Total Pages : 861 pages
Book Rating : 4.34/5 ( download)

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Download or read book Astroparticle Physics: Theory and Phenomenology written by Günter Sigl and published by Springer. This book was released on 2016-12-05 with total page 861 pages. Available in PDF, EPUB and Kindle. Book excerpt: This books aims at giving an overview over theoretical and phenomenological aspects of particle astrophysics and particle cosmology. To be of interest for both students and researchers in neighboring fields of physics, it keeps a balance between well established foundations that will not significantly change in the future and a more in-depth treatment of selected subfields in which significant new developments have been taking place recently. These include high energy particle astrophysics, such as cosmic high energy neutrinos, the interplay between detection techniques of dark matter in the laboratory and in high energy cosmic radiation, axion-like particles, and relics of the early Universe such as primordial magnetic fields and gravitational waves. It also contains exercises and thus will be suitable for both introductory and advanced courses in astroparticle physics.