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

Simple item page
dc.creatorKaufmann, Pierre
dc.creatorTrottet, Gerard
dc.creatorde Castro, C. Guillermo Gimenez
dc.creatorRaulin, Jean-Pierre
dc.creatorKrucker, Sam
dc.creatorShih, Albert Y.
dc.creatorLevato, Hugo
dc.date2008-11-21
dc.date2008-12-17
dc.date.accessioned2026-07-07T12:46:34Z
dc.date.available2026-07-07T12:46:34Z
dc.descriptionThe 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 SST and microwaves (1-18 GHz) observed by the Owens Valley Solar Array (OVSA). Emissions obtained by instruments in 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 gamma-rays from the Ramaty High Energy Solar Spectroscopic Imager (RHESSI). The sub-THz impulsive component had its closer temporal counterpart only in the higher energy X- and gamma-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 found difficult to be reconciled to a purely thermal emission component. We discuss possible mechanisms to explain the double spectral components at microwaves and in the THz ranges.
dc.descriptionAccepted version for publication in Solar Physics
dc.identifierhttps://arxiv.org/abs/0811.3488
dc.identifierhttp://arxiv.org/abs/0811.3488
dc.identifierSolar Physics, v255, pp131-142, (2009)
dc.identifierdoi:10.1007/s11207-008-9312-7
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/221426
dc.subjectAstrophysics
dc.titleSub-terahertz, microwaves and high energy emissions during the December 6, 2006 flare, at 18:40 UT
dc.typetext

Files

Collections

arXiv