Kinetic-Scale Turbulence in the Venusian Magnetosheath - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Geophysical Research Letters Year : 2021

Kinetic-Scale Turbulence in the Venusian Magnetosheath

T. A. Bowen
  • Function : Author
S. D. Bale
  • Function : Author
R. Bandyopadhyay
J. W. Bonnell
  • Function : Author
A. Case
A. Chasapis
  • Function : Author
C. H. K. Chen
  • Function : Author
S. Curry
  • Function : Author
K. Goetz
K. Goodrich
J. Gruesbeck
  • Function : Author
J. Halekas
P. R. Harvey
  • Function : Author
G. G. Howes
  • Function : Author
J. C. Kasper
  • Function : Author
K. Korreck
D. Larson
R. Livi
R. J. Macdowall
  • Function : Author
D. M. Malaspina
  • Function : Author
A. Mallet
  • Function : Author
M. D. Mcmanus
  • Function : Author
B. Page
M. Pulupa
N. Raouafi
  • Function : Author
M. L. Stevens
  • Function : Author
P. Whittlesey

Abstract

While not specifically designed as a planetary mission, NASA's Parker Solar Probe (PSP) mission uses a series of Venus gravity assists (VGAs) in order to reduce its perihelion distance. These orbital maneuvers provide the opportunity for direct measurements of the Venus plasma environment at high cadence. We present first observations of kinetic scale turbulence in the Venus magnetosheath from the first two VGAs. In VGA1, PSP observed a quasi-parallel shock, β ∼ 1 magnetosheath plasma, and a kinetic range scaling of k-2.9. VGA2 was characterized by a quasi-perpendicular shock with β ∼ 10, and a steep k-3.4 spectral scaling. Temperature anisotropy measurements from VGA2 suggest an active mirror mode instability. Significant coherent waves are present in both encounters at sub-ion and electron scales. Using conditioning techniques to exclude these electromagnetic wave events suggests the presence of developed sub-ion kinetic turbulence in both magnetosheath encounters.
Fichier principal
Vignette du fichier
Geophysical Research Letters - 2020 - Bowen - Kinetic%E2%80%90Scale Turbulence in the Venusian Magnetosheath.pdf (3.24 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

insu-03559382 , version 1 (24-06-2022)

Licence

Copyright

Identifiers

Cite

T. A. Bowen, S. D. Bale, R. Bandyopadhyay, J. W. Bonnell, A. Case, et al.. Kinetic-Scale Turbulence in the Venusian Magnetosheath. Geophysical Research Letters, 2021, 48, pp.2745-2764. ⟨10.1029/2020GL090783⟩. ⟨insu-03559382⟩
30 View
18 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More