Presents cutting-edge studies of helicities from different research fields
Helicities play essential roles in numerous geophysical, astrophysical, and magnetohydrodynamic phenomena, thus are studied from various disciplinary viewpoints.
Helicities in Geophysics, Astrophysics, and Beyond draws together experts from different research fields to present an interdisciplinary and integrated approach to helicity studies. This synthesis advances understanding of the fundamental physical processes underlying various helicity-related phenomena.
Volume highlights include:
* Concise introduction to fundamental properties of helicities
* Recent developments and achievements in helicity studies
* Perspectives from different fields including geophysics, space physics, solar physics, plasma physics, atmospheric and nonlinear sciences
* A cohesive mathematical, physical, observational, experimental, and numerical strategy for helicity studies
* A synthesized framework for the application of helicity to real-world problems
The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
Cuprins
List of contributors vii
Preface ix
Part I Helicity Essentials: Basic and Fundamental Concepts 1
1 Introduction to Field Line Helicity 3
Anthony R. Yeates and Mitchell A. Berger
2 Magnetic Winding: Theory and Applications 17
David Mac Taggart
3 Transport in Helical Fluid Turbulence 25
Nobumitsu Yokoi
Part II Helicity Manifestations in Nature and Their Observations 51
4 Observations of Magnetic Helicity Proxies in the Solar Photosphere: Helicity With Solar Cycles 53
Hongqi Zhang, Shangbin Yang, Haiqing Xu, Xiao Yang, Jie Chen, and Jihong Liu
5 Chirality of Solar Filaments and the Supporting Magnetic Field 75
Peng-Fei Chen
6 Solar Flares and Magnetic Helicity 83
Shin Toriumi and Sung-Hong Park
7 Magnetic Helicity Measurements in the Solar Wind 105
Yasuhito Narita
8 Magnetic Helicity in Rotating Neutron Stars 117
Maxim Dvornikov
9 Writhing From Biophysics to Solar Physics and Back 133
Christopher Prior and Arron N. Bale
10 Kinetic Helicity in the Earth’s Atmosphere 149
Otto Chkhetiani and Michael Kurgansky
Part III Theoretical and Numerical Helicity Modeling 167
11 Effects of P-Noninvariance, Particles, and Dynamos 169
Victor B. Semikoz and Dmitry D. Sokoloff
12 Stability of Plasmas Through Magnetic Helicity 179
Simon Candelaresi and Fabio Del Sordo
13 Helicity-Conserving Relaxation in Unstable and Merging Twisted Magnetic Flux Ropes 189
Philippa K. Browning, Mykola Gordovskyy, and Alan W. Hood
14 Emergence of Magnetic Structure in Supersonic Isothermal Magnetohydrodynamic Turbulence 203
Jean-Mathieu Teissier and Wolf-Christian Müller
15 Nonlinear Mean-Field Dynamos With Magnetic Helicity Transport and Solar Activity: Sunspot Number and Tilt 217
Nathan Kleeorin, Kirill Kuzanyan, Igor Rogachevskii, and Nikolai Safiullin
16 The Spatial Segregation of Kinetic Helicity in Geodynamo Simulations 241
Avishek Ranjan and Peter Davidson
Index 259
Despre autor
Kirill Kuzanyan, IZMIRAN/Russian Academy of Sciences, Russia.
Nobumitsu Yokoi, University of Tokyo, Japan.
Manolis K. Georgoulis, Academy of Athens, Greece.
Rodion Stepanov, Perm Federal Research Center, Russia.
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