通过 RATAN-600 观测推断的太阳黑子上方微波源光谱特征

IF 1.3 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
L. V. Opeikina, N. G. Peterova, N. A. Topchilo, V. E. Abramov-Maximov
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引用次数: 0

摘要

摘要利用RATAN-600在1.7-10厘米范围内的高光谱(\(\Delta f/f\sim 1{-}5%\))分辨率观测获得了太阳黑子上方回旋源的通量密度谱,并估算了它们的光谱指数。然后利用光谱指数来确定太阳上过渡区底部的磁场大小。通过分析辐射源的发射通量密度与磁场之间的关系,发现观测到的太阳黑子相关辐射源的特征与通常用于数据解释的简化辐射模型的预测不一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Features of the Spectra of Microwave Sources above Sunspots Inferred from Observations with RATAN-600

Features of the Spectra of Microwave Sources above Sunspots Inferred from Observations with RATAN-600

Features of the Spectra of Microwave Sources above Sunspots Inferred from Observations with RATAN-600

The flux density spectra of cyclotron sources above the sunspots were obtained by observations with RATAN-600 in the range of 1.7–10 cm with high spectral (\(\Delta f/f\sim 1{-}5\%\)) resolution and their spectral indices were estimated. The spectral index was then utilized to determine the magnitude of the magnetic field at the base of the transition region on the Sun. By analyzing the relationship between the emisson flux density of the sources and the magnetic field it was found that the observed characteristics of sunspot-associated sources did not align with predictions from a simplified radiation model commonly used for data interpretation. Specifically, there was an excess flux density in the spectrum of ordinary mode radiation compared to what was expected.

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来源期刊
Astrophysical Bulletin
Astrophysical Bulletin 地学天文-天文与天体物理
CiteScore
2.00
自引率
33.30%
发文量
31
审稿时长
>12 weeks
期刊介绍: Astrophysical Bulletin is an international peer reviewed journal that publishes the results of original research in various areas of modern astronomy and astrophysics, including observational and theoretical astrophysics, physics of the Sun, radio astronomy, stellar astronomy, extragalactic astronomy, cosmology, and astronomy methods and instrumentation.
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