Spatial characterization of a flare using radio observations and magnetic field topology

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dc.contributor.authorCristiani G.
dc.contributor.authorMartinez G.
dc.contributor.authorMandrini C.H.
dc.contributor.authorGimenezDeCastro C.G.
dc.contributor.authorDaSilva C.W.
dc.contributor.authorRovira M.G.
dc.contributor.authorKaufmann P.
dc.date.accessioned2024-03-13T01:41:16Z
dc.date.available2024-03-13T01:41:16Z
dc.date.issued2007
dc.description.abstractUsing magnetograms, EUV and Hα images, Owens Valley Solar Array microwave observations, and 212-GHz flux density derived from the Solar Submillimeter Telescope data, we determine the spatial characteristics of the 1B/M6.9 flare that occurred on November 28, 2001, starting at 16:26 UT in active region (AR) NOAA 9715. This flare is associated with a chromospheric mass ejection or surge observed at 16:42 UT in the Hα images. We compute the coronal magnetic field under the linear force-free field assumption, constrained by the photospheric data of the Michelson Doppler Imager and loops observed by the Extreme Ultraviolet Imaging Telescope. The analysis of the magnetic field connectivity allows us to conclude that magnetic field reconnection between two different coronal/chromospheric sets of arches was at the origin of the flare and surge, respectively. The optically thick microwave spectrum at peak time shows a shape compatible with the emission from two different sites. Fitting gyrosynchrotron emission to the observed spectrum, we derive parameters for each source. © Springer 2007.
dc.description.firstpage271
dc.description.issuenumber2
dc.description.lastpage281
dc.description.volume240
dc.identifier.doi10.1007/s11207-006-0337-5
dc.identifier.issn0038-0938
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/37724
dc.relation.ispartofSolar Physics
dc.rightsAcesso Restrito
dc.subject.otherlanguageAssociation with flares
dc.subject.otherlanguageDynamic spectrum
dc.subject.otherlanguageFlares
dc.subject.otherlanguageMagnetic reconnection
dc.subject.otherlanguageObservational signatures
dc.subject.otherlanguageRadio burst
dc.subject.otherlanguageRelation to magnetic field
dc.subject.otherlanguageSurges
dc.titleSpatial characterization of a flare using radio observations and magnetic field topology
dc.typeArtigo
local.scopus.citations9
local.scopus.eid2-s2.0-34047183130
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=34047183130&origin=inward
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