Turbulence In The Solar Wind

Author : Roberto Bruno,Vincenzo Carbone
Publisher : Springer
Page : 267 pages
File Size : 46,6 Mb
Release : 2016-10-07
Category : Science
ISBN : 9783319434407

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Turbulence in the Solar Wind by Roberto Bruno,Vincenzo Carbone Pdf

This book provides an overview of solar wind turbulence from both the theoretical and observational perspective. It argues that the interplanetary medium offers the best opportunity to directly study turbulent fluctuations in collisionless plasmas. In fact, during expansion, the solar wind evolves towards a state characterized by large-amplitude fluctuations in all observed parameters, which resembles, at least at large scales, the well-known hydrodynamic turbulence. This text starts with historical references to past observations and experiments on turbulent flows. It then introduces the Navier-Stokes equations for a magnetized plasma whose low-frequency turbulence evolution is described within the framework of the MHD approximation. It also considers the scaling of plasma and magnetic field fluctuations and the study of nonlinear energy cascades within the same framework. It reports observations of turbulence in the ecliptic and at high latitude, treating Alfvénic and compressive fluctuations separately in order to explain the transport of mass, momentum and energy during the expansion. Further, existing models are compared with direct observations in the heliosphere. The problem of self-similar and anomalous fluctuations in the solar wind is then addressed using tools provided by dynamical system theory and discussed on the basis of available models and observations. The book highlights observations of Yaglom’s law in solar wind turbulence, which is one of the most important findings in fully developed turbulence and directly related to the long-lasting and still unsolved problem of solar wind plasma heating. Lastly, it includes a short chapter dedicated to the kinetic range of fluctuations, which has recently been receiving more attention from the space plasma community, since this is inherently related to turbulent energy dissipation and consequent plasma heating. It particularly focuses on the nature and role of the fluctuations populating this frequency range, and discusses several model predictions and recent observational findings in this context.

Author : C.-Y. Tu,Eckart Marsch
Publisher : Springer Science & Business Media
Page : 214 pages
File Size : 51,6 Mb
Release : 2013-06-29
Category : Science
ISBN : 9789401585415

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MHD Structures, Waves and Turbulence in the Solar Wind by C.-Y. Tu,Eckart Marsch Pdf

This is the first book to give a comprehensive overview of recent observational and theoretical results on solar wind structures and fluctuations and magnetohydrodynamic waves and turbulence, preference being given to phenomena in the inner heliosphere. Emphasis is placed on the progress made in the past decade in the understanding of the nature and origin of especially small-scale, compressible and incompressible fluctuations. Turbulence models describing the spatial transport and spectral transfer of the fluctuations in the inner heliosphere are discussed. Intermittency of solar wind fluctuations and their statistical distributions are investigated. Studies of the heating and acceleration effects of the turbulence on the background wind are critically surveyed. Finally, open questions concerning the origin, nature and evolution of the fluctuations are listed, and perspectives for future research are outlined. The book is for graduate students and researchers in the field. Other target groups are scientists and professionals interested in space plasma physics and/or MHD turbulence.

Author : Marina Stepanova,Joseph E. Borovsky,Vadim Uritsky,Zoltan Voros,Alessandro Retino,Gaetano Zimbardo
Publisher : Frontiers Media SA
Page : 284 pages
File Size : 42,5 Mb
Release : 2022-03-24
Category : Science
ISBN : 9782889717019

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The Role of Turbulence in the Solar Wind, Magnetosphere, Ionosphere Dynamics by Marina Stepanova,Joseph E. Borovsky,Vadim Uritsky,Zoltan Voros,Alessandro Retino,Gaetano Zimbardo Pdf

Author : Munehito Shoda
Publisher : Springer Nature
Page : 94 pages
File Size : 55,9 Mb
Release : 2021-04-13
Category : Science
ISBN : 9789811610301

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Fast Solar Wind Driven by Parametric Decay Instability and Alfvén Wave Turbulence by Munehito Shoda Pdf

This book discusses key theoretical aspects concerning the formation of the solar wind: the most essential building block in the heliosphere, in which planets orbit. To understand the influence of solar activity on planetary magnetospheres and atmospheres, we need to first understand the origin of the solar wind, which is still under debate. This book presents the outcomes of state-of-the-art numerical simulations of solar wind acceleration, including the first three-dimensional simulation of the turbulence-driven solar wind model. One of the book’s goals is to include compressional effects in the dynamics of solar wind turbulence; accordingly, it discusses parametric decay instability in detail. Several key aspects that are relevant to the Parker Solar Probe observations are also discussed. Given its scope, the book plays a key role in bridging the gap between the theory of magnetohydrodynamic turbulence and current/future in-situ observations of the solar wind. This book is based on the Ph.D. thesis by the author, which won the 2019 International Astronomical Union Division E Ph.D. prize.

Author : Yasuhito Narita
Publisher : Springer Science & Business Media
Page : 108 pages
File Size : 40,9 Mb
Release : 2012-01-19
Category : Science
ISBN : 9783642256660

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Plasma Turbulence in the Solar System by Yasuhito Narita Pdf

Dynamics of astrophysical systems is often described by plasma physics, yet understanding the nature of plasma turbulence remains as a challenge in physics in both theories and experiments. This book is an up-to-date summary and review of recent results in research on waves and turbulence in near-Earth space plasma turbulence, obtained by Cluster, the multi-spacecraft mission. Spatial and temporal structures of solar wind turbulence as well as its interaction with the bow shock ahead of the Earth are presented using Cluster data. The book presents (1) historical developments, (2) theoretical background of plasma physics, turbulence theories, and the plasma physical picture of the solar system, (3) analysis methods for multi-spacecraft data, (4) results of Cluster data analysis, and (5) impacts on astrophysics and Earth sciences.

Author : M. Dryer,Einar Tandberg-Hanssen
Publisher : Springer Science & Business Media
Page : 543 pages
File Size : 46,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400991002

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Solar and Interplanetary Dynamics by M. Dryer,Einar Tandberg-Hanssen Pdf

Informal discussions in 1977 among a number of scientists asso ciated with solar and interplanetary physics revealed a need for a dialogue between the two often-divergent groups. It was clear that the latter group was dependent essentially on the sun for its raison d'etre. On the other hand it was also clear that the former group could benefit in its search for insight vis-a-vis solar activity by looking beyond the shell of the inner corona. Needless to add that the combined solar/interplanetary topic is relevant to astrophysics when one considers stellar winds and binary star flows. It was felt, there fore, that a symposium was essential to bring together, for the first time, leading solar and interplanetary physicists from the interna tional community to discuss and record herein their own research. The fundamental physical processes underlying our own capricious star's activity can be understood only by the coupling of solar and interplan etary topics in an intimate observational and theoretical structure. This book, intended for active research scientists and advanced grad uate students, is an important step in this direction. The background of solar and interplanetary dynamics is provided in Part I (The Life History of Coronal Structures and Fields) and Part II (Coronal and Interplanetary Responses to Long Time Scale Phenomena).

Author : R. Erdélyi,K. Petrovay,B. Roberts,Markus Aschwanden
Publisher : Springer Science & Business Media
Page : 388 pages
File Size : 50,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400710634

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Turbulence, Waves and Instabilities in the Solar Plasma by R. Erdélyi,K. Petrovay,B. Roberts,Markus Aschwanden Pdf

Significant advances have been made recently in both the theoretical understanding and observation of small-scale turbulence in different layers of the Sun, and in the instabilities that give rise to them. The general development of solar physics, however, has led to such a degree of specialization as to hinder interaction between workers in the field. This book therefore presents studies of different layers and regions of the Sun, but from the same aspect, concentrating on the study of small-scale motions. The main emphasis is on the common theoretical roots of these phenomena, but the book also contains an extensive treatment of the observational aspects.

Author : Olga Alexandrova,C. H. K. Chen,Luca Sorriso-Valvo
Publisher : Unknown
Page : 139 pages
File Size : 50,5 Mb
Release : 2013
Category : Electronic
ISBN : OCLC:1272853202

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Solar Wind Turbulence and the Role of Ion Instabilities by Olga Alexandrova,C. H. K. Chen,Luca Sorriso-Valvo Pdf

Author : Loukas Vlahos,P. Cargill
Publisher : Springer Science & Business Media
Page : 332 pages
File Size : 43,6 Mb
Release : 2009-06-16
Category : Science
ISBN : 9783642002090

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Turbulence in Space Plasmas by Loukas Vlahos,P. Cargill Pdf

Over the years, many leading European graduate schools in the field of astrophysical and space plasmas have operated within the framework of the research network, "Theory, Observations, and Simulations in Turbulence in Space Plasmas." This text is a set of lectures and tutorial reviews culled from the relevant work of all those schools. It emphasizes applications on solar coronae, solar flares, and the solar wind. In bridging the gap between standard textbook material and state-of-the-art research, this text offers a broad flavor to postgraduate and postdoctoral students just coming to the field. And because of its unique mix, it will also be useful to lecturers looking for advanced teaching material for their seminars and courses.

Author : Antonella Greco,Benoit Lavraud,Denise Perrone,Alexandros Chasapis
Publisher : Frontiers Media SA
Page : 137 pages
File Size : 55,5 Mb
Release : 2021-02-01
Category : Science
ISBN : 9782889662418

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Improving the Understanding of Kinetic Processes in Solar Wind and Magnetosphere: From CLUSTER to MMS by Antonella Greco,Benoit Lavraud,Denise Perrone,Alexandros Chasapis Pdf

Author : Loukas Vlahos,Peter Cargill
Publisher : Springer
Page : 325 pages
File Size : 53,5 Mb
Release : 2009-06-12
Category : Science
ISBN : 9783642002106

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Turbulence in Space Plasmas by Loukas Vlahos,Peter Cargill Pdf

Over the years, many leading European graduate schools in the field of astrophysical and space plasmas have operated within the framework of the research network, "Theory, Observations, and Simulations in Turbulence in Space Plasmas." This text is a set of lectures and tutorial reviews culled from the relevant work of all those schools. It emphasizes applications on solar coronae, solar flares, and the solar wind. In bridging the gap between standard textbook material and state-of-the-art research, this text offers a broad flavor to postgraduate and postdoctoral students just coming to the field. And because of its unique mix, it will also be useful to lecturers looking for advanced teaching material for their seminars and courses.

Author : Benjamin A. Breech
Publisher : ProQuest
Page : 128 pages
File Size : 44,9 Mb
Release : 2008
Category : Magnetohydrodynamics
ISBN : 0549752188

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Topics in Solar Wind Turbulence by Benjamin A. Breech Pdf

The solar wind provides ample opportunity for the study of magnetohydrodynamic (MHD) turbulence. This dissertation will examine several problems within the context of solar wind turbulence; making extensive use of spacecraft observations, theoretical results and simulations. The strength of solar wind turbulence is related to the induced electric field, arising from the velocity and magnetic field fluctuations carried by the wind. We will provide characterizations of the induced electric field. In particular, we will show that under the assumption that velocity and magnetic fluctuations are normally distributed the induced electric field has an exponential like distribution. We will then compare this result to observations using near-earth space craft. There is excellent agreement. We will examine a model describing the heliospheric transport of turbulence. We will derive the model using approximations appropriate to the solar wind. Observations from the solar wind are used to tune the model parameters. The model, which includes the effects of cross helicity, driving through shear and pickup protons, will then be used to compute turbulence levels throughout the heliosphere. Two other auxiliary problems will also be examined. The first is the presence of 1/ f noise in the solar wind. We will use Ulysses observations to show the presence of 1/ f noise in high latitudes in both the magnetic and density spectra. We will show that 1/ f noise tends to be more prevalent at higher latitudes in the inner heliosphere. Finally, we examine the statistical property of stationarity, i.e., averages are independent of time. We first examine a test sequence with known statistical properties. Using this sequence, we will develop a test for stationarity. The test will then be applied to solar wind data near 1 AU. The results show that only approximately 1/2 of the 4 day data intervals for the magnetic field are stationary. This can be used to create more reliable ensembles for data analysis.

Author : Peter Hunana
Publisher : Unknown
Page : 370 pages
File Size : 43,9 Mb
Release : 2008
Category : Heliosphere (Astrophysics)
ISBN : UCR:31210022794000

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Turbulence in Inhomogeneous Flows by Peter Hunana Pdf

Author : Rainer Schwenn,Eckart Marsch
Publisher : Springer Science & Business Media
Page : 360 pages
File Size : 42,6 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783642753640

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Physics of the Inner Heliosphere II by Rainer Schwenn,Eckart Marsch Pdf

Physics of the Inner Heliosphere gives for the first time a comprehensive and complete summary of our knowledge of the inner solar system. Using data collected over more than 11 years by the HELIOS twin solar probes, one of the most successful ventures in unmanned space exploration, the authors have compiled six extensive reviews of the physical processes of the inner heliosphere and their relation to the solar atmosphere. Researchers and advanced students in space and plasma physics, astronomy, and solar physics will be surprised to see just how closely the heliosphere is tied to, and how sensitively it depends on, the sun. Volume 2 deals with particles, waves, and turbulence, with chapters on: - magnetic clouds - interplanetary clouds - the solar wind plasma and MHD turbulence - waves and instabilities - energetic particles in the inner solar system

Author : Victor Montagud-Camps
Publisher : Springer Nature
Page : 123 pages
File Size : 40,8 Mb
Release : 2019-10-11
Category : Science
ISBN : 9783030303839

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Turbulent Heating and Anisotropy in the Solar Wind by Victor Montagud-Camps Pdf

This book presents two important new findings. First, it demonstrates from first principles that turbulent heating offers an explanation for the non-adiabatic decay of proton temperature in solar wind. Until now, this was only proved with reduced or phenomenological models. Second, the book demonstrates that the two types of anisotropy of turbulent fluctuations that are observed in solar wind at 1AU originate not only from two distinct classes of conditions near the Sun but also from the imbalance in Alfvén wave populations. These anisotropies do not affect the overall turbulent heating if we take into account the relation observed in solar wind between anisotropy and Alfvén wave imbalance. In terms of the methods used to obtain these achievements, the author shows the need to find a very delicate balance between turbulent decay and expansion losses, so as to directly solve the magnetohydrodynamic equations, including the wind expansion effects.