在地面观测到的极光源射电辐射:突出问题

IF 2.6 3区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS Frontiers in Astronomy and Space Sciences Pub Date : 2023-08-11 DOI:10.3389/fspas.2023.1195654
J. Labelle
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引用次数: 0

摘要

极光无线电发射作为地球环境的一部分具有内在的兴趣,但也提供了电离层条件和过程的遥感,以及适用于广泛空间和天体物理等离子体的发射过程的实验室。在甚低频及以上,会出现四大类无线电发射。所有这些都是用地基仪器观测到的,在某些情况下,用天基仪器观测到,程度较低。与每种类型的无线电发射有关,仍然存在许多实验和理论挑战,例如:解释频率和时间结构,与极光亚暴或当前系统的关系,以及应用于极光电离层遥感。在某些情况下,震源高度或生成机制等基本参数是不确定的。cubesat车队、超大容量磁盘驱动器和软件定义的广播节目等新兴技术进步有望更好地了解极光无线电发射。
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Radio emissions of auroral origin observable at ground level: outstanding problems
Auroral radio emissions are of intrinsic interest as part of the Earth’s environment but also provide remote sensing of ionospheric conditions and processes and a laboratory for emission processes applicable to a wide range of space and astrophysical plasmas. At VLF and above, four broad classes of radio emissions occur. All have been observed with ground-based and, in some cases to a lesser degree, with space-based instruments. Related to each type of radio emission, many experimental and theoretical challenges remain, for example: explanations of frequency and time structure, relations to auroral substorms or current systems, and application to remote sensing of the auroral ionosphere. In some cases, basic parameters such as source heights or generation mechanisms are uncertain. Emerging technological advances such as cubesat fleets, ultra-large capacity disk drives, and software defined radio show promise for developing better understanding of auroral radio emissions.
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来源期刊
Frontiers in Astronomy and Space Sciences
Frontiers in Astronomy and Space Sciences ASTRONOMY & ASTROPHYSICS-
CiteScore
3.40
自引率
13.30%
发文量
363
审稿时长
14 weeks
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