Location of Repository

Jupiter's polar ionospheric flows: theoretical interpretation

By S. W. H. Cowley, E. J. Bunce, T. S. Stallard and S. Miller

Abstract

Prompted by recent observations of ion flows from Doppler measurements of infrared auroras, we here discuss the nature of the plasma flow in Jupiter's high-latitude ionosphere. The physical picture is based on a combination of three elements, namely an inner Hill-type sub-corotating region containing outward-diffusing iogenic plasma, an outer sub-corotating region where iogenic plasma is lost down the tail, principally in the dusk and midnight sector via the reconnection-related Vasyliunas-cycle, and finally an outermost boundary region located principally in the dawn-side magnetosphere which is associated with solar wind interaction and the Dungey-cycle. The nature of the ionospheric flow and currents resulting from the combined action of these processes is outlined. In particular, we point out that the region of open field lines associated with the Dungey-cycle should be a region of near-stagnation in the ionosphere in the rest frame of the dipole, compared with surrounding regions of few-km s[superscript −1] sub-corotational flow.Peer-reviewedPublisher Versio

Publisher: American Geophysical Union
Year: 2003
DOI identifier: 10.1029/2002GL016030
OAI identifier: oai:lra.le.ac.uk:2381/697
Journal:

Suggested articles

Preview

Citations

  1. (1984). A dawn-to-dusk electric field in the jovian magnetosphere, doi
  2. (2001). A new perspective concerning the influence of the solar wind on doi
  3. (2002). A pulsating auroral X-ray hot spot on doi
  4. (1994). A remarkable auroral event on Jupiter observed in the ultraviolet with the Hubble Space Telescope, doi
  5. (1981). Centrifugally-driven diffusion of iogenic plasma, doi
  6. (1981). Characteristics of hot plasma in the jovian magnetosphere: Results from the Voyager spacecraft, doi
  7. (1981). Dependence of polar cap potential drop on interplanetary parameters, doi
  8. (2002). Detailed analysis of HST-STIS observation of Jupiter’s far-ultraviolet aurora, Icarus, submitted,
  9. (1998). Detailed study of FUV jovian auroral features with the post-COSTAR HST faint object camera, doi
  10. Divergence of the equatorial current in the dawn sector of Jupiter’s magnetosphere: analysis of Pioneer and Voyager magnetic field data, doi
  11. (1996). Emission source model of Jupiter’s H3+ aurorae: A generalized inverse analysis of images, doi
  12. (2001). Global flows of energetic ions in Jupiter’s equatorial plane: First-order approximation, doi
  13. (1995). Hot ions in the jovian magnetodisc: A model for Voyager 2 low-energy charged particle measurements, doi
  14. (1998). Hubble Space Telescope imaging of Jupiter’s UV aurora during the Galileo orbiter mission, doi
  15. (1979). Inertial limit on corotation, doi
  16. (2001). Influence of solar wind on Jupiter’s magnetosphere deduced from currents in the equatorial plane, doi
  17. (1961). Interplanetary field and the auroral zones, doi
  18. (1983). Jupiter’s magnetic field and magnetosphere, doi
  19. (1999). Jupiter’s visible aurora and Io footprint, doi
  20. Local time asymmetry of the equatorial current sheet in Jupiter’s magnetosphere, doi
  21. (1983). Magnetospheric models, doi
  22. (2001). More about the structure of the high latitude jovian aurorae, doi
  23. (2001). On the dynamics of the jovian ionosphere and thermosphere 1. The measurement of ion winds, doi
  24. (2001). Origin of the main auroral oval in Jupiter’s coupled magnetosphere-ionosphere system, doi
  25. (2002). Particle burst in the jovian magnetosphere: Evidence for a near-Jupiter neutral line, doi
  26. (1988). Plasma bulk flow in Jupiter’s dayside middle magnetosphere, doi
  27. (1983). Plasma distribution and flow, doi
  28. (1996). Plasma flow in the jovian magnetosphere and related magnetic effects: Ulysses observations, doi
  29. (1987). Polarization of low frequency electromagnetic radiation in the lobes of Jupiter’s magnetotail, doi
  30. (1997). Radial mass transport and rotational dynamics, doi
  31. (1999). Supersonic winds in Jupiter’s aurorae, doi
  32. (2001). The jovian auroral oval, doi
  33. (1993). Ulysses plasma electron observations in the jovian magnetosphere, doi

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.