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Broadband radio spectral observations of the solar eclipse on 2008-08-01 and its implications on the quiet Sun atmospheric model

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Abstract

Based on the joint-observations of the radio broadband spectral emissions of the solar eclipse on August 1, 2008 at Jiuquan (total eclipse) and Huairou (partial eclipse) at the frequencies of 2.00–5.60 GHz (Jiuquan), 2.60–3.80 GHZ (Chinese solar broadband radiospectrometer, SBRS/Huairou), and 5.20–7.60 GHz (SBRS/Huairou), the authors assemble a successive series of broadband spectra with a frequency of 2.60–7.60 GHz to observe the solar eclipse synchronously. This is the first attempt to analyze the solar eclipse radio emission under the two telescopes located at different places with broadband frequencies in the periods of total and partial eclipses. With these analyses, the authorsmade a semiempirical model of the coronal plasma density of the quiet Sun, which can be expressed as n e ≃ 1.42×109(r −2+1.93r −5) (cm−3), in the space range of r=1.039–1.212 R ⊙, and made a comparison with the classic model.

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Authors and Affiliations

  1. Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100021, China

    BaoLin Tan, YiHua Yan, Yin Zhang, ChengMin Tan, Jing Huang, YuYing Liu, QiJun Fu, ZhiJun Chen, Fei Liu, LinJie Chen & GuoShu Ji

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  1. BaoLin Tan
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  2. YiHua Yan
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  3. Yin Zhang
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  4. ChengMin Tan
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  5. Jing Huang
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  6. YuYing Liu
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  7. QiJun Fu
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  8. ZhiJun Chen
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  9. Fei Liu
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  10. LinJie Chen
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  11. GuoShu Ji
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Corresponding author

Correspondence to BaoLin Tan.

Additional information

Supported by the CAS-NSFC Key Project (Grant No. 10778605), the National Natural Science Foundation of China (Grant Nos. 10733020, 10843002, and 10873021), and the MOST (Grant No. 2006CB806301)

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Tan, B., Yan, Y., Zhang, Y. et al. Broadband radio spectral observations of the solar eclipse on 2008-08-01 and its implications on the quiet Sun atmospheric model. Sci. China Ser. G-Phys. Mech. Astron. 52, 1765–1772 (2009). https://doi.org/10.1007/s11433-009-0230-y

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  • DOI: https://doi.org/10.1007/s11433-009-0230-y

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