Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Journal articles

Wave-particle energy transfer directly observed in an ion cyclotron wave

Abstract : Context. The first studies with Parker Solar Probe (PSP) data have made significant progress toward understanding of the fundamental properties of ion cyclotron waves in the inner heliosphere. The survey mode particle measurements of PSP, however, did not make it possible to measure the coupling between electromagnetic fields and particles on the time scale of the wave periods. Aims. We present a novel approach to study wave-particle energy exchange with PSP. Methods. We used the Flux Angle operation mode of the Solar Probe Cup in conjunction with the electric field measurements and present a case study when the Flux Angle mode measured the direct interaction of the proton velocity distribution with an ion cyclotron wave. Results. Our results suggest that the energy transfer from fields to particles on the timescale of a cyclotron period is equal to approximately 3–6% of the electromagnetic energy flux. This rate is consistent with the hypothesis that the ion cyclotron wave was locally generated in the solar wind.
Document type :
Journal articles
Complete list of metadata
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Tuesday, September 14, 2021 - 8:43:17 AM
Last modification on : Tuesday, May 10, 2022 - 3:24:57 PM
Long-term archiving on: : Wednesday, December 15, 2021 - 6:09:34 PM


Publisher files allowed on an open archive


Distributed under a Creative Commons Attribution 4.0 International License




D. Vech, M. M Martinović, K. G Klein, D. M Malaspina, T. A Bowen, et al.. Wave-particle energy transfer directly observed in an ion cyclotron wave. Astronomy and Astrophysics - A&A, EDP Sciences, 2021, 650, pp.A10. ⟨10.1051/0004-6361/202039296⟩. ⟨insu-03343157⟩



Record views


Files downloads