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arXiv · 1512.01763

Comparison of 30 THz impulsive burst time development to microwaves, H-alpha, EUV, and GOES soft X-rays

R. Miteva·P. Kaufmann·D. P. Cabezas·M. M. Cassiano·L. O. T. Fernandes·S. L. Freeland·M. Karlicky·A. Kerdraon·A. S. Kudaka·M. L. Luoni·R. Marcon·J. -P. Raulin·G. Trottet·S. M. White
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Abstract

The recent discovery of impulsive solar burst emission in the 30 THz band is raising new interpretation challenges. One event associated with a GOES M2 class flare has been observed simultaneously in microwaves, H-alpha, EUV, and soft X-ray bands. Although these new observations confirm some features found in the two prior known events, they exhibit time profile structure discrepancies between 30 THz, microwaves, and hard X-rays (as inferred from the Neupert effect). These results suggest a more complex relationship between 30 THz emission and radiation produced at other wavelength ranges. The multiple frequency emissions in the impulsive phase are likely to be produced at a common flaring site lower in the chromosphere. The 30 THz burst emission may be either part of a nonthermal radiation mechanism or due to the rapid thermal response to a beam of high-energy particles bombarding the dense solar atmosphere.

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R. Miteva, P. Kaufmann, D. P. Cabezas, M. M. Cassiano, L. O. T. Fernandes, S. L. Freeland, M. Karlicky, A. Kerdraon, A. S. Kudaka, M. L. Luoni, R. Marcon, J. -P. Raulin, G. Trottet, S. M. White. 2015-12-06. Comparison of 30 THz impulsive burst time development to microwaves, H-alpha, EUV, and GOES soft X-rays. https://doi.org/10.1051/0004-6361%2F201425520

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