Solar flare detection sensitivity using the South America VLF Network (SAVNET)

dc.creatorRaulin, JP
dc.creatorBertoni, FCP
dc.creatorGavilan, HR
dc.creatorGuevara-Day, W
dc.creatorRodriguez, R
dc.creatorFernandez, G
dc.creatorCorreia, E
dc.creatorKaufmann, P
dc.creatorPacini, A
dc.creatorStekel, TRC
dc.creatorLima, WLC
dc.creatorSchuch, NJ
dc.creatorFagundes, PR
dc.creatorHadano, R
dc.date2010
dc.date39264
dc.date2014-11-19T17:47:41Z
dc.date2015-11-26T17:07:52Z
dc.date2014-11-19T17:47:41Z
dc.date2015-11-26T17:07:52Z
dc.date.accessioned2018-03-28T23:56:26Z
dc.date.available2018-03-28T23:56:26Z
dc.identifierJournal Of Geophysical Research-space Physics. Amer Geophysical Union, v. 115, 2010.
dc.identifier0148-0227
dc.identifierWOS:000279826100003
dc.identifier10.1029/2009JA015154
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/71765
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/71765
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/71765
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1280207
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionWe present recent observations of Sudden Phase Anomalies due to subionospheric propagation anomalies produced by solar X-ray flares. We use the new South America VLF Network (SAVNET) to study 471 ionospheric events produced by solar flares during the period May 2006 to July 2009 which corresponds to the present minimum of solar activity. For this activity level, we find that 100% of the solar flares with a X-ray peak flux above 5 x 10(-7) W/m(2) in the 0.1-0.8 nm wavelength range produce a significant ionospheric disturbance, while the minimum X-ray flux needed to do so is about 2.7 x 10(-7) W/m(2). We find that this latter minimum threshold is dependent on the solar cycle, increasing when the Sun is more active, thus confirming that the low ionosphere is more sensitive during periods of low solar activity. Also, our findings are in agreement with the idea that the ionospheric D-region is formed and maintained by the solar Lyman-alpha radiation outside solar flare periods.
dc.descriptionO TEXTO COMPLETO DESTE ARTIGO, ESTARÁ DISPONÍVEL À PARTIR DE FEVEREIRO DE 2015.
dc.description115
dc.descriptionMACKPESQUISA
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCentre National de la Recherche Scientifique (CNRS)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionCNPq [Proc. 304433/2004-7, 490124/2006-2]
dc.descriptionFAPESP [Proc. 2007/05630-1, 06/02979]
dc.languageen
dc.publisherAmer Geophysical Union
dc.publisherWashington
dc.publisherEUA
dc.relationJournal Of Geophysical Research-space Physics
dc.relationJ. Geophys. Res-Space Phys.
dc.rightsembargo
dc.sourceWeb of Science
dc.subjectX-ray Flares
dc.subjectD-region
dc.subjectPhase Deviations
dc.subjectIonosphere
dc.subjectAnomalies
dc.subjectAmplitude
dc.subjectEnhancements
dc.subjectPropagation
dc.subjectIonization
dc.subjectBursts
dc.titleSolar flare detection sensitivity using the South America VLF Network (SAVNET)
dc.typeArtículos de revistas


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