Long-term and transient time variation of cosmic ray fluxes detected in Argentina by CARPET cosmic ray detector
Tipo
Artigo
Data de publicação
2011
Periódico
Journal of Atmospheric and Solar-Terrestrial Physics
Citações (Scopus)
35
Autores
De Mendonca R.R.S.
Raulin J.-P.
Bertoni F.C.P.
Echer E.
Makhmutov V.S.
Fernandez G.
Raulin J.-P.
Bertoni F.C.P.
Echer E.
Makhmutov V.S.
Fernandez G.
Orientador
Título da Revista
ISSN da Revista
Título de Volume
Membros da banca
Programa
Resumo
We present results obtained at El Leoncito (CASLEO, San Juan, Argentina) with the CARPET charged particles detector installed in April 2006. The observed modulation of the cosmic ray flux is discussed as a function of its time variability and it is related to longer solar activity variations and to shorter variations during solar and geomagnetic transient activity. Short period (few minutes, few hours) cosmic ray modulation events are observed during rain time (precipitation) and significant variations of the atmospheric electric field. Complementary observations of the atmospheric electric field indicate that its time variations play an important role in the detected cosmic ray event. © 2010 Elsevier Ltd.
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Assuntos Scopus
Argentina , Atmospheric electric field , Atmospheric phenomena , Cosmic ray flux , Cosmic ray modulation , Geomagnetic activities , Short periods , Solar activity , Time variability , Time variations , Transient time