Abstract
This paper presents studies of the vertical structure of hard X-ray flares for two contrasting examples. The 1981 May 13 flare contained a coronal hard X-ray source which was located above 50000 km above the photosphere. On the other hand, the 1981 July 20 flare had a chromospheric double source structure in the initial phase. Electrons in this case were able to stream freely from the corona to the chromosphere.
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Tsuneta, S., Takakura, T., Nitta, N. et al. Vertical structure of hard X-ray flare. Sol Phys 86, 313–321 (1983). https://doi.org/10.1007/BF00157204
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DOI: https://doi.org/10.1007/BF00157204