Skip to main content

Advertisement

Jovian electron modulations by the solar wind interaction with the magnetosphere

Article metrics

  • 189 Accesses

  • 7 Citations

Abstract

Variations of energetic electrons released from the Jovian magnetosphere are investigated in detail by using data from three spacecraft, Pioneer 10, 11, and Ulysses. Analyses with the three spacecraft data confirmed that the Jovian electrons are modulated by the dynamic pressure of the solar wind at the position of Jupiter. It is also found that the release rate of energetic electrons is controlled by the polarity of IMF having dawn-dusk or latitudinal dependence. The enhancements of released electron flux were detected during the toward polarity of IMF when the spacecraft were located in the upstream or dawn side of Jupiter. On the other hand, Ulysses detected enhancement in away polarity of IMF when the spacecraft was on the duskside of southern hemisphere. We made a simulation to reproduce the electron variation of Jovian electrons observed by Pioneer 11 considering the convective and diffusive transport in the interplanetary medium. According to the simulation, the observed enhancements of electron flux originating from Jupiter are well represented by the coupling of both the source modulation at the Jovian magnetosphere and the transport effect in the interplanetary medium.

References

  1. Balogh, A., T. J. Beek, R. J. Forsyth, P. C. Hedgecock, R. J. Marquedant, E. J. Smith, D. J. Southwood, and B. T. Turutani, The magnetic field investigation on the Ulysses mission: Instrumentation and preliminary scientific results, Astron. Astrophys. Suppl. Ser, 92, 221, 1992.

  2. Bame, S. J., D. J. McComes, B. L. Barraclough, J. L. Phillips, K. J. Sofaly, J. C. Chavez, B. E. Goldstein, and R. K. Sakurai, The Ulysses solar wind plasma experiment, Astron. Astrophys. Suppl. Ser., 92, 237–265, 1992.

  3. Chenette, D. L., The propagation of Jovian electrons to Earth, J. Geophys. Res., 85(A5), 2243–2256, 1980.

  4. Chenette, D. L., T. F. Conlon, and J. A. Simpson, Bursts of relativistic electrons from Jupiter observed in interplanetary space with the time variation of the planetary rotation period, J. Geophys. Res., 79, 3551–3558, 1974.

  5. Chenette, D. L., T. F. Conlon, K. R. Pyle, and J. A. Simpson, Observations of Jovian electrons at 1 AU throughout the 13 month Jovian synodic year, Astrophys. J., 215, L95–L99, 1977.

  6. Conlon, T. F., The interplanetary modulation and transport of Jovian electrons, J. Geophys. Res., 83, 541–552, 1978.

  7. Conlon, T. F. and J. A. Simpson, Modulation of Jovian electron intensity in interplanetary space by corotating interaction regions, Astrophys. J., 211, L45–L49, 1977.

  8. Cooper, F. J., H. K. Mills, and J. H. King, Coordinated Heliospheric Observations (COHO) data base, in Proceedings of the 22th International Cosmic Ray Conference, Dndlin, Vol. 3, pp. 796–799, 1991.

  9. Ferrando, P., R. Ducros, C. Rastoin, A. Raviart, H. Kunow, R. Müller-Mellin, H. Sierks, and G. Wibberenz, Propagation of Jovian electrons in and out of the ecliptic, Adv. Space Res., 13, (6)107–(6)110, 1993a.

  10. Ferrando, P., R. Ducros, C. Rastoin, and A. Raviart, Jovian electron jets in interplanetary space, Planet. Space Sci., 41, 839–849, 1993b.

  11. Hamilton, D. C. and J. A. Simpson, Jovian electron propagation out of the solar equatorial plane: Pioneer 11 observations, Astrophys. J., 228, L123–L127, 1979.

  12. Huddleston, D. E., C. T. Rusell, G. Li, and A. Szabo, Magnetopause structure and the role of reconnection at the outer planets, J. Geophys. Res., 102, 24289–2302, 1997.

  13. McKibben, R. B., J. A. Simpson, and M. Zhang, Impulsive bursts of relativistic electrons discoverd during Ulysses’s traversal of Jupiter’s dusk-side magnetosphere, Planet. Space Sci., 41, 1041–1058, 1993.

  14. Morioka, A. and F. Tsuchiya, Solar wind control of Jovian electron flux: Pioneer 11 analysis, Geophys. Res. Lett., 23, 2963–2966, 1996.

  15. Morioka, A., F. Tsuchiya, and H. Misawa, Modulation of Jovian electrons by the solar wind, Adv. Space Res., 20, 205–208, 1997.

  16. Pyle, K. R. and J. A. Simpson, The Jovian relativistic electron distribution in interplanetary space from 1 to 11 AU: Evidence for a continuously emitting “point” source, Astrophys. J., 215, L89–L93, 1977.

  17. Schardt, A. W., F. B. McDonald, and J. H. Trainor, Jovian modulation of interplanetary electrons as observed with Voyagers 1 and 2, J. Geophys. Res., 88 (A3), 1989–2000, 1983.

  18. Simpson, J. A., D. Hamilton, G. A. Lentz, R. B. McKibben, A. Mogro-Campero, M. Perkins, K. R. Pyle, A. J. Tuzzolino, and J. J. O’Gallagher, Protons and electrons in Jupiter’s magnetic field: Results from the University of Chicago experiment on Pioneer 10, Science, 183, 306–309, 1974.

  19. Simpson, J. A., J. D. Anglin, A. Balogh, M. Bercovitch, J. M. Bouman, E. E. Budzinski, J. R. Burrows, R. Cravell, J. J. Connell, R. Ducros, P. Ferrando, J. Firth, M. Garcia-Munoz, J. Henrion, R. J. Hynds, B. Iwers, R. Jacquet, H. Kunow, G. Lentz, R. G. Marsden, R. B. McKibben, R. Müller-Mellin, D. E. Page, M. Perkins, A. Raviart, T. R. Sanderson, H. Sierks, L. Treguer, A. J. Tuzzolino, K.-P. Wenzel, and G. Wibberenz, The Ulysses cosmic ray and solar particle investigation, Astron. Astrophys. Suppl. Ser., 92, 365–399, 1992.

  20. Simpson, J. A., D. A. Smith, and M. Zhang, Jovian electron propagation in three dimensions of the heliosphere: The Ulysses investigations, J. Geophys. Res., 98(A12), 21129–21144, 1993.

  21. Smith, E. J. and J. H. Wolfe, Observations of interaction regions and corotating shocks between one and five AU: Pioneer 10 and 11, Geophys. Res. Lett., 3(3), 137–140, 1976.

  22. Smith, E. J., L. Davis, Jr., D. E. Jones, P. J. Coleman, Jr., D. S. Colburn, P. Dyal, C. P. Sonett, and A. M. A. Frandsen, The planetary magnetic field and magnetosphere of Jupiter: Pioneer 10, J. Geophys. Res., 79, 3501–3513, 1974.

  23. Smith, E. J., R. W. Fillius, and J. H. Wolfe, Compression of Jupiter’s Magnetosphere by the Solar Wind, J. Geophys. Res., 83 (A10), 4733–4742, 1978.

  24. Teegarden, B. J., F. B. McDonald, J. H. Trainor, W. R. Webber, and E. C. Roelof, Interplanetary MeV electrons of Jovian origin, J. Geophys. Res., 79, 3615–3622, 1974.

  25. Walker, R. J. and C. T. Russell, Flux transfer events at the Jovian magnetopause, J. Geophys. Res., 90, 7397–7404, 1985.

  26. Wolfe, J. H., J. D. Mihalov, H. R. Collard, D. D. McKibben, L.A. Frank, and D. S. Intriligator, Pioneer 10 observations of the solar wind interaction with Jupiter, J. Geophys. Res., 79, 3489–3500, 1974.

  27. Zhang, M., J. A. Simpson, and R. B. McKibben, Relativistic electron flux anisotropies in the duskside of Jovian magnetosphere: a test for location and escape mechanism., Planet. Space Sci., 41, 1029–1040, 1993.

Download references

Author information

Correspondence to F. Tsuchiya.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Tsuchiya, F., Morioka, A. & Misawa, H. Jovian electron modulations by the solar wind interaction with the magnetosphere. Earth Planet Sp 51, 987–996 (1999) doi:10.1186/BF03351569

Download citation

Keywords

  • Solar Wind
  • Dynamic Pressure
  • Relativistic Electron
  • Interplanetary Space
  • Interplanetary Medium