文章基本信息

标题：A Study of Long-Term Solar Activity at 37 GHz
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作者：J. Kallunki ; N. Lavonen ; E. Järvelä 等
期刊名称：Open Astronomy
电子版ISSN：2543-6376
出版年度：2012
卷号：21
期号：3
页码：255-262
DOI：10.1515/astro-2017-0384
语种：English
出版社：Walter de Gruyter GmbH & Co. KG
摘要：AbstractIn this paper we investigate the solar activity at the radio frequency (37 GHz) using an extensive data series (solar radio maps) from the Metsähovi Radio Observatory. This paper aims to present this unique solar radio map collection to the public knowledge. The data set covers the years from 1978 to 2011 (solar cycles 21–24). We investigate the long-term solar activity on the ground of the distribution of solar radio brightenings and the differential rotation of the Sun.
关键词：KeywordsSunactivityradio radiationdifferential rotation