Long-term and transient time variation of cosmic ray fluxes detected in Argentina by CARPET cosmic ray detector

Autor(es)

De Mendonca, R. R. S. ; Raulin, J. -P. ; Bertoni, F. C. P. ; Echer, E. ; Makhmutov, V. S. ; Fernandez, G.

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS; v. 73, n. 11-12, p. 7-pg., 2011-07-01.

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. (C) 2010 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 09/11935-5 - Influência das atividades solar, geomagnética e atmosférica na modulação do fluxo de raios cósmicos.
• Beneficiário: Rafael Rodrigues Souza de Mendonça
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 07/05630-1 - Efeitos ionosféricos de tempestades magnéticas em escala global
• Beneficiário: Fernando Celso Perin Bertoni
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 07/52533-1 - Estudo de ondas de plasma em magnetosferas planetárias
• Beneficiário: Ezequiel Echer
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores