@MastersThesis{Silva:2005:VaInRa,
               author = "Silva, Marlos Rockenback da",
                title = "Varia{\c{c}}{\~a}o da intensidade dos raios c{\'o}smicos em 
                         resposta a diferentes estruturas magn{\'e}ticas do meio 
                         interplanet{\'a}rio",
               school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                 year = "2005",
              address = "S{\~a}o Jos{\'e} dos Campos",
                month = "2005-08-11",
             keywords = "geof{\'{\i}}sica espacial, raios c{\'o}smicos, vento solar, 
                         meio interplanet{\'a}rio, tempestades magn{\'e}ticas, ciclo 
                         solar, space geophysics, cosmic rays, solar wind, interplanetary 
                         medium, magnetic storms, solar cicle.",
             abstract = "Neste trabalho n{\'o}s mostramos que o comportamento dos raios 
                         c{\'o}smicos secund{\'a}rios (neutron e muons) depende das 
                         estruturas solares observadas no meio interplanet{\'a}rio. Foram 
                         analisadas observa{\c{c}}{\~o}es interplanet{\'a}rias e de 
                         raios c{\'o}smicos na superf{\'{\i}}cie terrestre no 
                         per{\'{\i}}odo de 2001 a 2004. Para isto, dados de campo 
                         magn{\'e}tico interplanet{\'a}rio e dos parametros do vento 
                         solar, registrados pelos instrumentos a bordo do sat{\'e}lite 
                         Advanced Composition Explorer - ACE, e dados de raios 
                         c{\'o}smicos de superf{\'{\i}}cie dos monitores de neutrons 
                         mantidos pelo Instituto de Pequisa Bartol, instalado na 
                         Universidade de Delaware , Estados Unidos, e do telesc{\'o}pio 
                         cintilador de muons, instalado no Observat{\'o}rio Espacial do 
                         Sul - OES/RSU/INPE-MCT em S{\~a}o Martinho da Serra, Brasil, 
                         foram utilizados. As estruturas interplanet{\'a}rias foram 
                         classificadas como: (a) Eje{\c{c}}{\~o}es de Massa Coronal 
                         Interplanet{\'a}rias, (b) Choques Interplanet{\'a}rios, (c) 
                         Nuvens Magn{\'e}ticas, (d) Regioes de Intera{\c{c}}{\~a}o 
                         Co-rotantes, e (e) Eventos Complexos. N{\'o}s observamos que 
                         durante a passagem das nuvens magn{\'e}ticas o decr{\'e}scimo 
                         dos raios c{\'o}smicos s{\~a}o mais intensos do que durante a 
                         passagem das outras estruturas. Por outro lado, a resposta dos 
                         raios c{\'o}smicos durante a passagem das regi{\~o}es de 
                         intera{\c{c}}{\~a}o co-rotantes {\'e} a menos intensa. Apesar 
                         de todos os esfor{\c{c}}os, n{\~a}o {\'e} poss{\'{\i}}vel 
                         explicar satisfatoriamente a resposta dos raios c{\'o}smicos 
                         durante a passagem das estruturas interplanet{\'a}rias. 
                         V{\'a}rios modelos atribuem o decr{\'e}scimo dos raios 
                         c{\'o}smicos ao espalhamento das part{\'{\i}}culas na 
                         regi{\~a}o de campo magn{\'e}tico turbulento entre a frente de 
                         choque e a eje{\c{c}}{\~a}o. ABSTRACT: In this work we show that 
                         the secondary cosmic ray variations (neutron and muon) depends on 
                         the solar structures observed in the interplanetary medium. We 
                         analyzed interplanetary and cosmic ray ground based observations 
                         from 2001 to 2004. For this, interplanetary magnetic field and 
                         solar wind plasma parameters data, registered by the instruments 
                         on board the Advanced Composition Explorer - ACE satellite, and 
                         ground based cosmic rays data of the neutron monitors maintained 
                         by the Bartol Research Institute of the Delaware University, 
                         United States, and the muon cintillator telescope, installed in 
                         the Observat´orio Espacial do Sul - OES/RSU/INPE-MCT in Sao 
                         Martinho da Serra, Brazil, were used. We classified the 
                         interplanetary structures as: (a) Interplanetary Coronal Mass 
                         Ejection, (b) Interplanetary Shocks, (c) Magnetic Clouds, (d) 
                         Corotating Interation Regions, and (e) Complex Events. We observed 
                         that during the passage of magnetic clouds the cosmic ray 
                         decreases are more intense than during the others structures. 
                         Thereafter, the cosmic ray response to the corotating interaction 
                         regions passage are the less intense. In spite of all efforts, it 
                         is not possible to satisfactorily explain the cosmic ray response 
                         during the passage of the interplanetary structures. Several 
                         models attribute the cosmic rays decreases to the particles 
                         scattering in the magnetic field turbulent area between the shock 
                         front and the ejection.",
            committee = "Gonzalez Alarcon, Al{\'{\i}}cia Luiza Cl{\'u}a de (presidente), 
                         and Echer, Ezequiel (orientador), and Alarcon, Walter Demetrio 
                         Gonzalez (orientador), and Sobral, Jos{\'e} Humberto Andrade and 
                         Raulin, Jean-Pierre",
           copyholder = "SID/SCD",
         englishtitle = "Cosmic ray intensity variation in response to differents magnetic 
                         structures of interplanetary medium",
             language = "pt",
                pages = "149",
                  ibi = "6qtX3pFwXQZGivnJSY/HSKgQ",
                  url = "http://urlib.net/ibi/6qtX3pFwXQZGivnJSY/HSKgQ",
           targetfile = "publicacao.pdf",
        urlaccessdate = "07 maio 2024"
}