利用毫米波射电亮度预测太阳耀斑

IF 0.5 Q4 PHYSICS, APPLIED Latvian Journal of Physics and Technical Sciences Pub Date : 2023-04-01 DOI:10.2478/lpts-2023-0010
J. Kallunki
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引用次数: 0

摘要

摘要太阳活动可能对各种地球和近地空间系统产生重大影响,如卫星通信和电网系统。对太阳活动和太阳活动事件的预测在为这些扰动做准备时发挥着重要作用。各种基于卫星的仪器不断地观测太阳。然而,只有少数地基太阳能仪器能够为空间天气预测提供足够多的通用信息。阿尔托大学(芬兰)的Metsähovi射电天文台收集了过去40年来独特的毫米(8毫米)太阳射电图,自2011年以来,观测太阳射电数据目录更为密集。如今,每年约有75-80%的天数被覆盖。这为基于太阳射电图对太阳耀斑的发生进行统计估计提供了机会。在这项研究中,我们有2253天的时间观测到太阳无线电地图和GOES(地球静止运行环境卫星)分类的太阳耀斑。在这项工作中,我们使用了美国国家海洋和大气管理局(NOAA)空间气象中心(SWC)进行的太阳耀斑分类。这些数据是在2011年1月1日至2022年9月12日期间观察到的。我们的研究表明,无线电增亮的最大强度是一个很好的指标,可以判断预计会发生哪种GOES分类的太阳耀斑。这篇文章提出,强烈的无线电增亮是产生某种GOES分类的太阳耀斑所必需的。
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The Predicition of Solar Flares Using Millimeter Radio Brightenings
Abstract Solar activity could have significant impacts on various Earth and near-Earth space systems, such as satellite communication and power grid systems. The prediction of solar activity and active solar events plays a major role when preparing for these disturbances. Various satellite-based instruments constantly observe the Sun. However, only a few ground-based solar instruments could provide versatile enough information for the space weather prediction. Metsähovi Radio Observatory of Aalto University (Finland) has a unique collection of millimetre (8 mm) solar radio maps over the past 40 years, and even denser observational solar radio data catalogue since 2011. About 75–80 % days yearly are covered nowadays. This gives opportunity to make statistical estimation of solar flare occurrence based on solar radio maps. In this study, we had 2253 days when both solar radio map and GOES (Geostationary Operational Environmental Satellites) classified solar flare were observed. In this work, we used solar flare classification done by the Space Weather Centre (SWC) of the National Oceanic and Atmospheric Administration (NOAA). The data were observed between 1 January 2011 and 12 September 2022. Our study shows that the maximum intensity of radio brightenings is a good indicator to tell which kind of GOES classified solar flare could be expected to happen. The article presents that intense radio brightening is needed to produce a certain GOES classified solar flare.
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来源期刊
CiteScore
1.50
自引率
16.70%
发文量
41
审稿时长
5 weeks
期刊介绍: Latvian Journal of Physics and Technical Sciences (Latvijas Fizikas un Tehnisko Zinātņu Žurnāls) publishes experimental and theoretical papers containing results not published previously and review articles. Its scope includes Energy and Power, Energy Engineering, Energy Policy and Economics, Physical Sciences, Physics and Applied Physics in Engineering, Astronomy and Spectroscopy.
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