Ultralow Frequency Resonators: on the 80th Anniversary of the Discovery of Alfvén Waves

IF 0.8 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS Solar System Research Pub Date : 2023-08-15 DOI:10.1134/S0038094623040044

A. V. Guglielmi, B. I. Klain, A. S. Potapov

引用次数: 0

Abstract—

The concept of Alfvén waves, introduced into science 80 years ago, played an important role in the formation and development of cosmic electrodynamics. Alfvén waves differ in that at each point in space the group velocity vector and the vector of the external magnetic field are collinear to each other, due to which the waves can carry momentum, energy, and information over long distances. In memory of the outstanding event, we briefly describe two Alfvén resonators, one of which is located high above the Earth, in the radiation belt, and the second, in the ionospheric layers. Both resonators have a discrete spectrum in the upper part of the range of ultralow frequency oscillations of natural origin (approximately from 0.2 Hz to 7 Hz). The close connection between the concept of Alfvén waves and the current problems of the electrodynamics of geophysical media is especially emphasized.

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超低频谐振器:纪念阿尔夫萨芬波发现80周年

80年前，阿尔夫萨芬波的概念被引入科学，对宇宙电动力学的形成和发展起了重要作用。alfvsamn波的不同之处在于，在空间的每一点上，群速度矢量和外部磁场的矢量彼此共线，因此波可以长距离携带动量、能量和信息。为了纪念这一突出事件，我们简要地描述了两个阿尔夫萨芬谐振器，其中一个位于地球上方的辐射带中，另一个位于电离层中。两个谐振器在自然起源的超低频振荡范围的上部(大约从0.2 Hz到7 Hz)具有离散频谱。特别强调了alfvsamn波的概念与当前地球物理介质电动力学问题之间的密切联系。

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来源期刊

Solar System Research 地学天文-天文与天体物理

CiteScore

1.60

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Solar System Research publishes articles concerning the bodies of the Solar System, i.e., planets and their satellites, asteroids, comets, meteoric substances, and cosmic dust. The articles consider physics, dynamics and composition of these bodies, and techniques of their exploration. The journal addresses the problems of comparative planetology, physics of the planetary atmospheres and interiors, cosmochemistry, as well as planetary plasma environment and heliosphere, specifically those related to solar-planetary interactions. Attention is paid to studies of exoplanets and complex problems of the origin and evolution of planetary systems including the solar system, based on the results of astronomical observations, laboratory studies of meteorites, relevant theoretical approaches and mathematical modeling. Alongside with the original results of experimental and theoretical studies, the journal publishes scientific reviews in the field of planetary exploration, and notes on observational results.