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The loop prominence of May 13, 1971 and its associated effects

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Abstract

A study is presented of the formation of a loop prominence system (LPS) on May 13, 1971. The development of the phenomenon is found to be consistent with the model of Jefferies and Orrall, and was associated with small radio bursts and several kind of SID. From the spectral analysis a temperature of 13200 K has been deduced and a density of hydrogen atoms n(H) ≈ 1010cm-3 estimated. The existence of inclined emissions probably produced by rotatory motions is discussed. From the radio data analysis it was inferred that an impulsive and a thermal component were present; the length of the emitting plasma cloud was found to be about 56000 km. The LPS appeared, in accordance with previous results, in a region producing proton flares.

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Authors and Affiliations

  1. Observatorio Nacional de Física Cósmica, San Miguel, Argentina

    M. E. Machado, H. Grossi Gallegos & A. F. Silva

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  1. M. E. Machado
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  2. H. Grossi Gallegos
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  3. A. F. Silva
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Machado, M.E., Gallegos, H.G. & Silva, A.F. The loop prominence of May 13, 1971 and its associated effects. Sol Phys 25, 402–412 (1972). https://doi.org/10.1007/BF00192337

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  • DOI: https://doi.org/10.1007/BF00192337

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