Systematic measurements of propagation parameters of whistler-mode waves in the outer Van Allen belt: first results from the Van Allen probes compared to the database from the Cluster mission - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2013

Systematic measurements of propagation parameters of whistler-mode waves in the outer Van Allen belt: first results from the Van Allen probes compared to the database from the Cluster mission

O. Santolík
G. B. Hospodarsky
  • Fonction : Auteur
W. S. Kurth
  • Fonction : Auteur
T. F. Averkamp
  • Fonction : Auteur
C. Kletzing
  • Fonction : Auteur

Résumé

Electron populations of different energies in the Van Allen radiation belts can be influenced by whistler-mode waves. For example, these waves can cause pitch-angle and/or energy diffusion. They can therefore contribute to losses and local acceleration of radiation belt electrons. Wave propagation directions are a crucial parameter of the underlying wave-particle interactions. We use new measurements of whistler-mode waves by the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) onboard the Van Allen Probes spacecraft. Multicomponent data recorded and processed by this instrument allow us to systematically estimate the wave propagation parameters. We use the survey data from the first year of operations of the EMFISIS instrument to determine probability density functions of propagation characteristics of whistler-mode waves. We compare these results with a large database of measurements of the STAFF-SA instrument onboard the Cluster spacecraft, covering a time interval of more than one solar cycle. This work receives EU support through the FP7-Space grant agreement no 284520 for the MAARBLE collaborative research project.
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Dates et versions

hal-02860559 , version 1 (08-06-2020)

Identifiants

  • HAL Id : hal-02860559 , version 1

Citer

O. Santolík, G. B. Hospodarsky, W. S. Kurth, T. F. Averkamp, C. Kletzing, et al.. Systematic measurements of propagation parameters of whistler-mode waves in the outer Van Allen belt: first results from the Van Allen probes compared to the database from the Cluster mission. American Geophysical Union, Fall Meeting, Dec 2013, San Francisco, California, United States. pp.SM31B-06. ⟨hal-02860559⟩
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