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@InProceedings{MarcheziAlSiSiKaBa:2018:InReEl,
               author = "Marchezi, Jos{\'e} Paulo and Alves, Livia Ribeiro and Silva, 
                         Ligia Alves da and Sibeck, David G. and Kanekal, Shrikanth G. and 
                         Baker, Daniel N.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {NASA Goddard Space Flight Center} 
                         and {NASA Goddard Space Flight Center} and {University of 
                         Colorado}",
                title = "Increase in relativistic electron flux density during an complex 
                         interplanetary structure on 09 February 2014",
                 year = "2018",
         organization = "AGU Fall Meeting",
             abstract = "The particles trapped in the Earth's magnetic field perform three 
                         typical movements: gyromotion around the magnetic field line, 
                         bouncing along the magnetic field line and drifting across the 
                         magnetic field lines. Each movement has a characteristic time and 
                         constant of motion called the adiabatic invariant. The solar wind 
                         perturbations can interact with the Earth's magnetosphere and 
                         generate waves that have frequencies resonant with the 
                         characteristic frequencies of the adiabatic motion. With 
                         frequencies in the same range as those of the particle drift, 
                         ultra-low frequency (ULF) waves are known to cause significant 
                         changes in the energetic particle flux in the outer radiation 
                         belts. On 09 February 2014, the ACE satellite detected solar wind 
                         plasma and Interplanetary Magnetic Field (IMF) perturbations 
                         related to an Interplanetary Mass Ejection (ICME) followed by a 
                         High Speed Solar Wind Stream (HSS) event. In this work, we analyze 
                         the recovery of relativistic outer radiation belt electron flux 
                         after the interaction of a complex interplanetary structure with 
                         the Earths magnetosphere. We are interested in the HSS period, 
                         around 18:00 UT, when the outer radiation belt electrons flux 
                         density exhibited a gradual increase only a few hours after the 
                         interplanetary structure arrived. The electron flux density data 
                         where obtained by the Relativistic Electron Proton Telescope 
                         (REPT) instrument, onboard of the Van Allen Probes. For that 
                         period, the Probes where located at MLT ~ 15 and L ~ 5. The 
                         north-south solar wind magnetic field is characterized by a 
                         predominantly negative Bz and Alfv{\'e}nic fluctuations. The main 
                         focus here is to evaluate the role of each ULF wave frequency 
                         range, corresponding to Pc3, Pc4 and Pc5, in accelerating outer 
                         radiation belt electrons. Observations show an increase in the ULF 
                         wave power spectrum density for the electric and magnetic fields 
                         at the Van Allen Probes corresponding to an enhancement of the 
                         electron flux density with energies from 1.80 up to 3.40 MeV. This 
                         may indicate that ULF waves play a more important role on the 
                         acceleration process for this complex event.",
  conference-location = "Washington, D. C.",
      conference-year = "10-14 dec.",
             language = "en",
                  ibi = "8JMKD3MGP3W34R/3SB3GME",
                  url = "http://urlib.net/rep/8JMKD3MGP3W34R/3SB3GME",
           targetfile = "marchezi_increase.pdf",
        urlaccessdate = "21 jan. 2021"
}


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