Journal article
Direct observation of ion cyclotron damping of turbulence in Earth's magnetosheath plasma
Nature communications, Vol.15(1), p.7870
10/07/2024
DOI: 10.1038/s41467-024-52125-8
PMCID: PMC11458859
PMID: 39375361
Abstract
Plasma turbulence plays a key role in space and astrophysical plasma systems, enabling the energy of magnetic fields and plasma flows to be transported to particle kinetic scales at which the turbulence dissipates and heats the plasma. Identifying the physical mechanisms responsible for the dissipation of the turbulent energy is a critical step in developing the predictive capability for the turbulent heating needed by global models. In this work, spacecraft measurements of the electromagnetic fields and ion velocity distributions by the Magnetospheric Multiscale (MMS) mission are used to generate velocity-space signatures that identify ion cyclotron damping in Earth's turbulent magnetosheath, in agreement with analytical modeling. Furthermore, the rate of ion energization is directly quantified and combined with a previous analysis of the electron energization to identify the dominant channels of turbulent dissipation and determine the partitioning of energy among species in this interval.
Details
- Title: Subtitle
- Direct observation of ion cyclotron damping of turbulence in Earth's magnetosheath plasma
- Creators
- A S Afshari - University of IowaG G Howes - University of IowaJ R Shuster - University of New HampshireK G Klein - University of ArizonaD McGinnis - University of IowaM M Martinović - University of ArizonaS A Boardsen - Goddard Space Flight CenterC R Brown - University of Iowa, Physics and AstronomyR Huang - University of IowaD P Hartley - University of IowaC A Kletzing - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Nature communications, Vol.15(1), p.7870
- DOI
- 10.1038/s41467-024-52125-8
- PMID
- 39375361
- PMCID
- PMC11458859
- NLM abbreviation
- Nat Commun
- ISSN
- 2041-1723
- eISSN
- 2041-1723
- Publisher
- NATURE PORTFOLIO
- Grant note
- NASA: 80NSSC19K0912, 80NSSC20K0521
K.G.K. was supported by NASA Grant 80NSSC19K0912 and 80NSSC20K0521. The authors would like to thank the MMS instrument teams for their assiduous dedication in calibrating their data.
- Language
- English
- Date published
- 10/07/2024
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984722575302771
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