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Type: Artigo de Periódico
Title: Comparison Of 30 Thz Impulsive Burst Time Development To Microwaves, H Alpha, Euv, And Goes Soft X-rays
Author: Miteva
R; Kaufmann
P; Cabezas
DP; Cassiano
MM; Fernandes
LOT; Freeland
SL; Karlicky
M; Kerdraon
A; Kudaka
AS; Luoni
ML; Marcon
R; Raulin
JP; Trottet
G; White
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, Ha, 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.
Subject: Sun: Flares
Sun: Chromosphere
Sun: Radio Radiation
Sun: Uv Radiation
Citation: Astronomy & Astrophysics. EDP SCIENCES S A, n. 586, n. A91, p. .
Rights: aberto
Identifier DOI: 10.1051/0004-6361/201425520
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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