A bright impulsive solar burst detected at 30 THz

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dc.contributor.authorKaufmann P.
dc.contributor.authorWhite S.M.
dc.contributor.authorFreeland S.L.
dc.contributor.authorMarcon R.
dc.contributor.authorFernandes L.O.T.
dc.contributor.authorKudaka A.S.
dc.contributor.authorDe Souza R.V.
dc.contributor.authorAballay J.L.
dc.contributor.authorFernandez G.
dc.contributor.authorGodoy R.
dc.contributor.authorMarun A.
dc.contributor.authorValio A.
dc.contributor.authorRaulin J.-P.
dc.contributor.authorGimenez De Castro C.G.
dc.date.accessioned2024-03-13T01:04:44Z
dc.date.available2024-03-13T01:04:44Z
dc.date.issued2013
dc.description.abstractGround- and space-based observations of solar flares from radio wavelengths to gamma-rays have produced considerable insights but raised several unsolved controversies. The last unexplored wavelength frontier for solar flares is in the range of submillimeter and infrared wavelengths. Here we report the detection of an intense impulsive burst at 30 THz using a new imaging system. The 30 THz emission exhibited remarkable time coincidence with peaks observed at microwave, mm/submm, visible, EUV, and hard X-ray wavelengths. The emission location coincides with a very weak white-light feature, and is consistent with heating below the temperature minimum in the atmosphere. However, there are problems in attributing the heating to accelerated electrons. The peak 30 THz flux is several times larger than the usual microwave peak near 9 GHz, attributed to non-thermal electrons in the corona. The 30 THz emission could be consistent with an optically thick spectrum increasing from low to high frequencies. It might be part of the same spectral component found at sub-THz frequencies whose nature remains mysterious. Further observations at these wavelengths will provide a new window for flare studies. © 2013. The American Astronomical Society. All rights reserved.
dc.description.issuenumber2
dc.description.volume768
dc.identifier.doi10.1088/0004-637X/768/2/134
dc.identifier.issn1538-4357
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/36620
dc.relation.ispartofAstrophysical Journal
dc.rightsAcesso Aberto
dc.subject.otherlanguageSun: activity
dc.subject.otherlanguageSun: flares
dc.subject.otherlanguageSun: infrared
dc.subject.otherlanguageSun: radio radiation
dc.subject.otherlanguageSun: UV radiation
dc.subject.otherlanguageSun: X-rays, gamma rays
dc.titleA bright impulsive solar burst detected at 30 THz
dc.typeArtigo
local.scopus.citations30
local.scopus.eid2-s2.0-84877037009
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84877037009&origin=inward
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