Large-scale solar wind flow around Saturn's nonaxisymmetric magnetosphere

@article{Sulaiman2017LargescaleSW,
  title={Large-scale solar wind flow around Saturn's nonaxisymmetric magnetosphere},
  author={Ali H. Sulaiman and Xu Jia and Nicholas Achilleos and Nick Sergis and Donald A. Gurnett and William S. Kurth},
  journal={arXiv: Space Physics},
  year={2017}
}
The interaction between the solar wind and a magnetosphere is fundamental to the dynamics of a planetary system. Here, we address fundamental questions on the large-scale magnetosheath flow around Saturn using a 3D magnetohydrodynamic (MHD) simulation. We find Saturn's polar-flattened magnetosphere to channel ~20% more flow over the poles than around the flanks at the terminator. Further, we decompose the MHD forces responsible for accelerating the magnetosheath plasma to find the plasma… Expand

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References

SHOWING 1-10 OF 36 REFERENCES
Conditions at the magnetopause of Saturn and implications for the solar wind interaction
[1] Using idealized models of the magnetosheath and magnetospheric magnetic fields, plasma densities, and plasma flow, we test for the steady state viability of processes mediating the interactionExpand
Magnetospheric configuration and dynamics of Saturn's magnetosphere: A global MHD simulation
[1] We investigate the solar wind interaction with Saturn's magnetosphere by using a global magnetohydrodynamic simulation driven by an idealized time-varying solar wind input that includes featuresExpand
The importance of plasma β conditions for magnetic reconnection at Saturn's magnetopause
[1] Magnetic reconnection is an important process that occurs at the magnetopause boundary of Earth's magnetosphere because it leads to transport of solar wind energy into the system, drivingExpand
Solar wind flow about the outer planets - Gas dynamic modeling of the Jupiter and Saturn bow shocks
Pioneer 10 and 11 and Voyager 1 and 2 observations are used to study global aspects of the solar wind interaction with Jupiter and Saturn. Solar wind measurements before and after the encounters areExpand
Kelvin‐Helmholtz instability at Saturn's magnetopause: Hybrid simulations
[1] Recent observations of a plasma vortex in Saturn's dayside outer magnetosphere is evidence that the Kelvin-Helmholtz instability (KHI) is operating at Saturn's morning magnetospheric boundaries.Expand
Polar confinement of Saturn's magnetosphere revealed by in situ Cassini observations
Plasma rotation plays a large role in determining the size and shape of Saturn's disk-like magnetosphere. A magnetosphere more confined to the equator in the polar regions is expected as a result ofExpand
The effect of the magnetopause shapes of Jupiter and Saturn on magnetosheath parameters
The solar wind flow past nonaxisymmetric magnetospheres exhibits features which are absent in the case of axisymmetric magnetospheres such as that of Earth. We discuss results obtained by a numericalExpand
Local time asymmetry of Saturn's magnetosheath flows
Using gross averages of the azimuthal component of flow in Saturn's magnetosheath, we find that flows in the pre-noon sector reach a maximum value of roughly half that of the post-noon side.Expand
Strong bulk plasma acceleration in Earth's magnetosheath: A magnetic slingshot effect?
[1] In the near-Earth environment, strong bulk plasma accelerations are frequently taken to be the diagnostic of the occurrence of magnetic reconnection. In this letter, we report new and unambiguousExpand
Asymmetries observed in Saturn's magnetopause geometry
TLDR
A significant dawn‐dusk asymmetry is resolved and it is found that the magnetosphere extends farther from the planet on the dawnside of the planet by 7 ± 1%. Expand
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