Sub-terahertz, microwaves and high energy emissions during the 6 December 2006 Flare, at 18:40 UT

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dc.contributor.authorKaufmann P.
dc.contributor.authorTrottet G.
dc.contributor.authorGimenez De Castro C.G.
dc.contributor.authorRaulin J.-P.
dc.contributor.authorKrucker S.
dc.contributor.authorShih A.Y.
dc.contributor.authorLevato H.
dc.date.accessioned2024-03-13T01:35:08Z
dc.date.available2024-03-13T01:35:08Z
dc.date.issued2009
dc.description.abstractThe presence of a solar burst spectral component with flux density increasing with frequency in the sub-terahertz range, spectrally separated from the well-known microwave spectral component, bring new possibilities to explore the flaring physical processes, both observational and theoretical. The solar event of 6 December 2006, starting at about 18:30 UT, exhibited a particularly well-defined double spectral structure, with the sub-THz spectral component detected at 212 and 405 GHz by the Solar Submilimeter Telescope (SST) and microwaves (1∈-∈18 GHz) observed by the Owens Valley Solar Array (OVSA). Emissions obtained by instruments onboard satellites are discussed with emphasis to ultra-violet (UV) obtained by the Transition Region And Coronal Explorer (TRACE), soft X-rays from the Geostationary Operational Environmental Satellites (GOES) and X- and γ-rays from the Ramaty High Energy Solar Spectroscopic Imager (RHESSI). The sub-THz impulsive component had its closer temporal counterparts only in the higher energy X- and γ-rays ranges. The spatial positions of the centers of emission at 212 GHz for the first flux enhancement were clearly displaced by more than one arc-minute from positions at the following phases. The observed sub-THz fluxes and burst source plasma parameters were difficult to be reconciled with a purely thermal emission component. We discuss possible mechanisms to explain the double spectral components at microwaves and in the THz ranges. © 2009 Springer Science+Business Media B.V.
dc.description.firstpage131
dc.description.issuenumber1
dc.description.lastpage142
dc.description.volume255
dc.identifier.doi10.1007/s11207-008-9312-7
dc.identifier.issn0038-0938
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/37385
dc.relation.ispartofSolar Physics
dc.rightsAcesso Restrito
dc.titleSub-terahertz, microwaves and high energy emissions during the 6 December 2006 Flare, at 18:40 UT
dc.typeArtigo
local.scopus.citations29
local.scopus.eid2-s2.0-60849120426
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=60849120426&origin=inward
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