%0 Journal Article
%4 sid.inpe.br/mtc-m21d/2022/08.30.15.38
%2 sid.inpe.br/mtc-m21d/2022/08.30.15.38.43
%@doi 10.1029/2021JA029887
%@issn 2169-9402
%T Electron Flux Variability and Ultra-Low Frequency Wave Activity in the Outer Radiation Belt Under the Influence of Interplanetary Coronal Mass Ejections and High-Speed Solar Wind Streams: A Statistical Analysis From the Van Allen Probes Era
%D 2022
%8 Aug.
%9 journal article
%A Marchezi, José Paulo,
%A Dai, L.,
%A Alves, Livia Ribeiro,
%A Silva, Ligia Alves da,
%A Sibeck, D. G.,
%A Dal Lago, Alisson,
%A Souza, Vitor Moura Cardoso e Silva,
%A Jauer, Paulo Ricardo,
%A Vieira, Luís Eduardo Antunes,
%A Cardoso, F. R.,
%A Deggeroni, Vinícius,
%A Alves, Maria Virgínia,
%A Wang, C.,
%A Li, H.,
%A Liu, Z.,
%@affiliation Chinese Academy of Sciences (CAS)
%@affiliation Chinese Academy of Sciences (CAS)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation NASA Goddard Space Flight Center
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Universidade de São Paulo (USP)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Chinese Academy of Sciences (CAS)
%@affiliation Chinese Academy of Sciences (CAS)
%@affiliation Chinese Academy of Sciences (CAS)
%@electronicmailaddress jpmarchezi@gmail.com
%@electronicmailaddress
%@electronicmailaddress livia.alves@inpe.br
%@electronicmailaddress ligia.alves01@gmail.com
%@electronicmailaddress
%@electronicmailaddress alisson.dallago@inpe.br
%@electronicmailaddress vitormoura21@gmail.com
%@electronicmailaddress pauloricardojauer@gmail.com
%@electronicmailaddress luis.vieira71@googlemail.com
%@electronicmailaddress
%@electronicmailaddress vinidegg@gmail.com
%B Journal of Geophysical Research - Space Physics
%V 127
%N 8
%P e2021JA029887
%K ULF waves, depletions, enhancement, radiation belts, alfven waves, geomagnetic pulsations.
%X The ultra-low frequency (ULF) waves can stochastically accelerate radiation belt electrons. Radial diffusion is a well-established mechanism that can enhance or reduce the electron population in combination with other processes. Using data from the Van Allen Probes, we investigated the response of the 2.10 MeV energy electrons and ULF waves to two types of solar wind structures interacting with Earth's magnetosphere, namely, interplanetary coronal mass ejections (ICMEs) and High-Speed solar wind streams (HSS). We use measured electron differential flux and ULF waves in the Pc4-Pc5 frequency range from October 2012 to May 2019. We examine 155 events with changes in the outer radiation belt electron differential flux. Results considering all ICMEs and HSSs during the Van Allen Probes era show that for both solar wind structures, solar wind interplanetary magnetic field Bz, solar wind proton density, and speed are related to the outer radiation belt relativistic electrons' response. The persistent ULF power is present during enhancement cases, while for reduction, the ULF waves power is concentrated at the initial reduction on the outer radiation belt electron flux.
%@language en
%3 JGR Space Physics - 2022 - Marchezi - Electron Flux Variability and Ultra‐Low Frequency Wave Activity in the Outer.pdf