Theoretical Modeling Of Plasma Waves In The Magnetosphere
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Theoretical Modeling Of Plasma Waves In The Magnetosphere
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Author : V. L. Patel
language : en
Publisher:
Release Date : 1988
Theoretical Modeling Of Plasma Waves In The Magnetosphere written by V. L. Patel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
Theoretical studies of plasma waves play an important role in the understanding of characteristics of the problems of communications in the ionized environments of the earth. This project devoted efforts in the study of low frequency waves in the ionosphere and the magnetosphere. The aim was to include all recent attributes of the magnetospheric plasma, e.g. inhomogeneity, various ion species and finite beta effects in the theoretical modes. All of these features of the plasma medium affect the communication in various frequency ranges.
Plasma Waves In The Magnetosphere
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Author : A.D.M. Walker
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-13
Plasma Waves In The Magnetosphere written by A.D.M. Walker and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-13 with Science categories.
This book is a study of plasma waves which are observed in the earth's magnetosphere. The emphasis is on a thorough, but concise, treatment of the necessary theory and the use of this theory to understand the manifold varieties of waves which are observed by ground-based instruments and by satellites. We restrict our treatment to waves with wavelengths short compared with the spatial scales of the background plasma in the mag netosphere. By so doing we exclude large scale magnetohydrodynamic phenomena such as ULF pulsations in the Pc2-5 ranges. The field is an active one and we cannot hope to discuss every wave phenomenon ever observed in the magnetosphere! We try instead to give a good treatment of phenomena which are well understood, and which illustrate as many different parts of the theory as possible. It is thus hoped to put the reader in a position to understand the current literature. The treatment is aimed at a beginning graduate student in the field but it is hoped that it will also be of use as a reference to established workers. A knowledge of electromagnetic theory and some elementary plasma physics is assumed. The mathematical background required in cludes a knowledge of vector calculus, linear algebra, and Fourier trans form theory encountered in standard undergraduate physics curricula. A reasonable acquaintance with the theory of functions of a complex vari able including contour integration and the residue theorem is assumed.
Magnetospheric Plasma Physics The Impact Of Jim Dungey S Research
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Author : David Southwood
language : en
Publisher: Springer
Release Date : 2015-08-20
Magnetospheric Plasma Physics The Impact Of Jim Dungey S Research written by David Southwood and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-08-20 with Science categories.
This book makes good background reading for much of modern magnetospheric physics. Its origin was a Festspiel for Professor Jim Dungey, former professor in the Physics Department at Imperial College on the occasion of his 90th birthday, 30 January 2013. Remarkably, although he retired 30 years ago, his pioneering and, often, maverick work in the 50’s through to the 70’s on solar terrestrial physics is probably more widely appreciated today than when he retired. Dungey was a theoretical plasma physicist. The book covers how his reconnection model of the magnetosphere evolved to become the standard model of solar-terrestrial coupling. Dungey’s open magnetosphere model now underpins a holistic picture explaining not only the magnetic and plasma structure of the magnetosphere, but also its dynamics which can be monitored in real time. The book also shows how modern day simulation of solar terrestrial coupling can reproduce the real time evolution of the solar terrestrial system in ways undreamt of in 1961 when Dungey’s epoch-making paper was published. Further contributions on current Earth magnetosphere research and space plasma physics included in this book show how Dungey’s basic ideas have remained explanative 50 years on. But the Festspiel also introduced some advances that possibly Dungey had not foreseen. One of the contributions presented in this book is on the variety of magnetospheres of the solar system which have been seen directly during the space age, discussing the variations in spatial scale and reconnection time scale and comparing them in respect of Earth, Mercury, the giant planets as well as Ganymede.
Kinetic Theory Of The Inner Magnetospheric Plasma
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Author : George V. Khazanov
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-10-01
Kinetic Theory Of The Inner Magnetospheric Plasma written by George V. Khazanov and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-10-01 with Science categories.
The inner magnetosphere plasma is a very unique composition of different plasma particles and waves. It covers a huge energy plasma range with spatial and time variations of many orders of magnitude. In such a situation, the kinetic approach is the key element, and the starting point of the theoretical description of this plasma phenomena which requires a dedicated book to this particular area of research.
Modeling Magnetospheric Plasma
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Author : T. E. Moore
language : en
Publisher: American Geophysical Union
Release Date : 1988
Modeling Magnetospheric Plasma written by T. E. Moore and has been published by American Geophysical Union this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Science categories.
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 44. Existing models of the plasma distribution and dynamics in magnetosphere / ionosphere systems form a patchwork quilt of different techniques and boundaries chosen to define tractable problems. With increasing sophistication in both observational and modeling techniques has come the desire to overcome these limitations and strive for a more unified description of these systems. On the observational side, we have recently acquired routine access to diagnostic information on the lowest energy bulk plasma, completing our view of the plasma and making possible comparisons with magnetohydrodynamic calculations of plasma moments. On the theoretical side, rising computational capabilities and shrewdly designed computational techniques have permitted the first attacks on the global structure of the magnetosphere. Similar advances in the modeling of neutral atmospheric circulation suggest an emergent capability to globally treat the coupling between plasma and neutral gases. Simultaneously, computer simulation has proven to be a very useful tool for understanding magnetospheric behaviors on smaller space and time scales.
Dynamics Of Ion Scale Coherent Magnetic Structures And Coupling With Whistler Waves During Substorms
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Author : Anna Tenerani
language : en
Publisher:
Release Date : 2012
Dynamics Of Ion Scale Coherent Magnetic Structures And Coupling With Whistler Waves During Substorms written by Anna Tenerani and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
A new model of the self-consistent coupling between low frequency, ion-scale coherent magnetic structures and high frequency whistler waves is proposed in order to interpret space data gathered by Cluster satellites during substorm events, in the night sector of the Earth's magnetosphere. The coupling provides a mechanism to spatially confine and transport whistler waves by means of a highly oblique, propagating nonlinear carrier wave. The present study relies on a combination of data analysis of original in situ measurements, theoretical modeling and numerical investigation. During substorms, the magnetosphere undergoes strong magnetic and electric field fluctuations ranging from low frequencies, of the order or less than the typical ion-time scales, to higher frequencies, of the order or higher than the typical electron time-scales. To understand basic plasma physical processes which characterize the magnetosphere dynamics during substorms an analysis of whether, and by which mechanism, waves occurring at these different time scales are coupled, is of fundamental interest. Low frequency magnetic structures are commonly detected in environments such as the magnetosheath and the solar wind, as well as in the dusk magnetosphere, possibly correlated with higher frequency whistler waves. In this Thesis it is shown that similar magnetic structures, correlated with whistler waves, are observed in the magnetospheric plasma sheet during substorms. The interesting question arises as to how the inhomogeneity associated with such magnetic structures affects the propagation of higher frequency waves. The Cluster mission, thanks to its four satellites in tetrahedron configuration and high temporal resolution measurements, provides a unique opportunity on the one hand to explore the spatial structure of stationary and propagating perturbations observed at low frequencies and on the other hand to study dynamics occurring at higher temporal scales, via whistler mode waves. With regard to this, I will describe the Cluster spacecraft detection of large amplitude whistler wave packets inside coherent ion-scale magnetic structures embedded in a fast plasma flow during the August 17th 2003 substorm event. In this period the Cluster satellites were located in the plasma sheet region and separated by a distance which is less than the magnetotail typical ion-scale lengths, namely the ion gyroradius and the ion inertial length. The observed whistler emissions are correlated with magnetic field structures showing magnetic depletions associated with density humps. As a first step, the latter have been modeled as one dimensional nonlinear slow waves which spatially confine and transport whistlers, in the framework of a two-fluid approximation. This schematic model is investigated through a theoretical and numerical study by means of a two-fluid code, and it is shown that the proposed model goes quite well with data interpretation. Its possible role in substorm dynamics is also discussed. This new trapping mechanism, studied here by using a highly oblique slow magnetosonic soliton as a guide for whistler waves, is of more general interest beyond the specific context of the observations reported in this Thesis. Other nonlinear structures showing similar features, for example highly oblique nonlinear Alfvén waves or kinetic Alfvén waves in high beta plasmas, can in principle act as wave carriers. The model proposed provides an explanation for the recurrent detection of whistlers inside ion-scale magnetic structures which is alternative to usual models of stationary magnetic structures acting as channels. Moreover, the study described in this Thesis addresses more general questions of basic plasma physics, such as wave propagation in inhomogeneous plasmas and the interaction between wave modes at different temporal scales.
The Theory Of Plasma Waves
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Author : Thomas Howard Stix
language : en
Publisher:
Release Date : 1962
The Theory Of Plasma Waves written by Thomas Howard Stix and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with categories.
Magnetospheric Plasma Waves
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Author : Stanley Dean Shawhan
language : en
Publisher:
Release Date : 1977
Magnetospheric Plasma Waves written by Stanley Dean Shawhan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Magnetosphere categories.
Whistler Mode Waves In A Hot Plasma
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Author : Sergeĭ Stepanovich Sazhin
language : en
Publisher: Cambridge University Press
Release Date : 1993-02-11
Whistler Mode Waves In A Hot Plasma written by Sergeĭ Stepanovich Sazhin and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-02-11 with Science categories.
The book provides an extensive theoretical treatment of whistler-mode propagation, instabilities and damping in a hot, anisotropic and collisionless plasma. Most of the results are original and have never been published in a monograph on a similar subject before.
Surface Flute Waves In Plasmas
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Author : Volodymyr Girka
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-12
Surface Flute Waves In Plasmas written by Volodymyr Girka and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-12 with Science categories.
The book presents results of a comprehensive study of various features of eigen electromagnetic waves propagating across the axis of plasma filled metal waveguides with cylindrical geometry. The authors collected in one book material on various features of surface flute waves, i.e. impact of waveguide design on wave dispersion, wave damping influenced by various reasons, impact of plasma density and external magnetic field inhomogeneity on the wave, and impact of waveguide corrugation and electric current on the wave. A variety of present surface waves applications and possible future applications is also included. Using the method of successive approximations it is shown how one can solve problems, which concern real experimental devices, starting from simple models. The book applies to both professionals dealing with problems of confined plasmas and to graduate and post-graduate students specializing in the field of plasma physics and related applications.