@InProceedings{BragaDASKMTDHSAS:2011:CoRaMo,
               author = "Braga, Carlos Roberto and Dal Lago, Alisson and Alarcon, Walter 
                         Dem{\'e}trio Gonzalez and Schuch, Nelson Jorge and Kuwabara, 
                         Takao and Munakata, Kazuoki and Tokumaru, Munetoshi and Duldig, M. 
                         D. and Humble, J. E. and Sabbah, Ismail and Al Jassar, H. K. and 
                         Sharma, M. M.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and Bartol Research Insitute and Departament of 
                         Physics and Astronomy,University of Delaware - USA and Faculty of 
                         Science, Shinshu University - Japan and Solar-Terrestrial 
                         Environment Laboratory, Nagoya University - Japan and {Australian 
                         Antarctic Division - Australia} and School of Mathematics and 
                         Physics, University of Tasmania - Australia and Astronomy 
                         Department, Faculty of Science, King Abdulaziz University - Saudi 
                         Arabia and Physics Department, Faculty of Science, Kuwait and 
                         Physics Department, Faculty of Science, Kuwait",
                title = "Cosmic ray modulation associated to small and moderate geomagnetic 
                         storms during minimum solar activity",
            booktitle = "Proceedings...",
                 year = "2011",
         organization = "School on Cosmic Rays and Astrophysics, 4.",
             keywords = "Coronal mass ejections, iInterplanetary magnetic field , Cosmic 
                         rays.",
             abstract = "Inhomogeneities in the interplanetary magnetic field produced by 
                         interplanetary disturbances associated with coronal mass ejections 
                         are transmitted fast to remote locations as a directional 
                         anisotropy of high-energy cosmic ray intensity due to the high 
                         speed and long parallel mean free path of energetic particles. 
                         Cosmic ray intensity increases or decreases before the Forbush 
                         decreases have been observed with a single directional channel 
                         especially for strong geomagnetic storms associated with strong 
                         interplanetary shocks. The aim of this work is to study cosmic ray 
                         precursory phenomena of small and moderate geomagnetic storms from 
                         June 26th 2008 to December 31st 2008 (from Bartels rotation number 
                         2387 to 2393), most of them not associated with shocks, by 
                         analyzing data from the Global Muon Detector Network consisting of 
                         four multidirectional muon detectors. By analyzing muon count 
                         rates in 60 directional channels, the pitch angle distribution in 
                         a 48-hour period before the storm sudden commencement was studied 
                         by two different methodologies: one using the hourly count rate 
                         (MPA) and the other using the time derivative of the count rate 
                         (VPA). Possible precursors are clear in 4 of the 7 events 
                         registered in the selected period, generally observed by the 
                         MPA.",
  conference-location = "Santo Andr{\'e} - S{\~a}o Paulo - Braz",
      conference-year = "25 agosto a 4 setembro",
                label = "lattes: 0549130828972280 4 BragaDASKMTDHSAS:2011:CoRaMo",
             language = "en",
           targetfile = "Braga-CRA School_004[1].pdf",
                  url = "http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=118",
        urlaccessdate = "29 jun. 2024"
}