Modeling variability of plasma conditions in the Io torus

Journal of Geophysical Research: Space Physics

Volumn 108, Issue A7, 2003, Pages

  Delamere, P A ^a   Bagenal, F ^a  

^a UNIVERSITY OF COLORADO   (United States)

Author keywords

Chemistry; Io; Jupiter; Plasma; Torus; Variability

Indexed keywords

EID: 41749119165     PISSN: None     EISSN: 21699402     Source Type: Journal    
DOI: 10.1029/2002JA009706     Document Type: Article

References (55)

1. Bagenal, F., Empirical model of the Io plasma torus: Voyager measurements, J. Geophys. Res., 99, 11,043, 1994.
2. Bagenal, F., F. J. Crary, A. I. F. Stewart, N. M. Schneider, D. A. Gurnett, W. S. Kurth, L. A. Frank, and W. R. Paterson, Galileo measurements of plasma derisity in the Io torus, Geophys. Res. Lett., 24, 2119, 1997.
3. Barbosa; D. D., Neutral cloud theory of the Jovian nebula: Anomalous ionization effect of superthermal electrons, Astrophys. J., 430, 376, 1994.
4. Barbosa, D. D., and M. A. Moreno, A comprehensive model of ion diffusion and charge exchange in the cold Io torus, J. Geophys. Res., 93, 823, 1988.
5. Barbosa, D. D., F. V. Coroniti, and A. Eviatar, Coulomb thermal properties and stability of the Io plasma torus, Astrophys. J., 274, 429, 1983.
6. Book, D. L., NRL Plasma Formulary, Naval Res. Lab., Washington, D. C., 1990.
7. Broadfoot, A. L., Extreme ultraviolet observations from Voyager I encounter with Jupiter, Science, 204, 979, 1979.
8. Brown, M. E., Observation of mass loading in the Io plasma torus, Geophys. Res. Lett., 21, 847, 1994.
9. Brown, R. A., The Jupiter hot plasma torus: Observed electron temperature and energy flows, Astrophys. J., 244, 1072, 1981.
10. Brown, R. A., C. B. Pilcher, and D. F. Stobel, Spectrophotometric studies of the Io torus, Physics, of the Jovian Magnetosphere, pp. 197-225, Cambridge Univ. Press, New York, 1983.
11. Crary, F. J., F. Bagenal, L. A. Frank, and W. R. Paterson, Galileo plasma spectrometer measurements of composition and temperature in the Io plasma torus, J. Geophys. Res., 103, 29,359, 1998.
12. Dere, K. P., E. Landi, H. E. Mason, B. C. M. Fossi, and P. R. Young, CHIANTI-An atomic.dataset for emission lines, Astron. Astrophys. Supp., 125, 149, 1997.
13. Dessler, A. J., (Ed.), Physics of the Jovian Magnetosphere, Cambridge Univ. Press, New York, 1983.
14. Durrance, S. T., P. D. Feldman, and H. A. Weaver, Rocket detection of ultraviolet emission from neutral oxygen and sulfur in the Io torus, Astrophys. J., 267, L125, 1983.
15. Esposito, L. AV., et al., The Cassini ultraviolet imaging spectrograph investigation, Space Sci. Rev., in press, 2003.
16. Feldman, P.-D., T. B. Ake, A. F. Berman, H. W. Moos, D. J. Sahnow, D. F. Strobel, H. A. Weaver, and P. R. Young, Detection of chlorine ions in the far ultraviolet spectrscopic explorer spectrum of the Io plasma torus, Astrophys. J., 554, L123, 2001.
17. Frank, L. A., and W. R. Paterson, Observations of plasmas in the Io torus with the Galileo spacecraft, J. Geophys. Res., 105, 16,017, 2000a.
18. Frank, L. A., and W. R. Paterson, Return to Io by the Galileo spacecraft: Plasma observations, J. Geophys. Res., 105, 25,363, 2000b.
19. Frank, L. A., and W. R. Paterson, Survey of thermal ions in the Io plasma torus with the Galileo spacecraft, J. Geophys. Res., 106, 6131, 2001a.
20. Frank, L. A., and W. R. Paterson, Passage through Io's ionospheric plasmas by the Galileo, spacecraft, J. Geophys. Res., 106, 26,209, 2001b.
21. Frank, L. A., and W. R. Paterson, Plasmas observed with the Galileo spacecraft during its flyby over Io's northern polar region, J. Geophys. Res., 707(A12), 1478, doi: 10.1029/2001JA009150, 2002.
22. Frank, L. A., W. R. Paterson, K. L. Ackerson, V. M. Vasyliunas, F. V. Coroniti, and S. L. Bolton, Plasma observations at Io with the Galileo spacecraft, Nature, 274, 394, 1996.
23. Gurnett, D. A., W. S. Kurth, A. Roux, S. J. Bolton, and C. F. Kennel, Galileo plasma wave observations in the Io plasma torus and near Io, Science, 274, 391, 1996.
24. Gurnett, D. A., A. Persoon, and W. Kurth, Electron densities near Io from Galileo plasma wave observations, J. Geophys. Res., 106, 26,225, 2001.
25. Herbert, F., and B. R. Sandel, Radial profiles of ion density and parallel temperature in the io plasma torus during the Voyager 1 encounter, J. Geophys. Res., 100, 19,513, 1995.
26. Herbert, F., et al., Azimuthal variation of ion density and electron temperature in the Io plasma torus, J. Geophys. Res., 105, 16,035-16,052, 2000.
27. Herbert, F., et al., Extreme Ultraviolet Explorer spectra of the Io plasma torus, J. Geophys. Res., 106, 26,293, 2001.
28. Herbert, F., et al., Hubble Space Telescope observations of sulfur ions in the Io plasma torus: New constraints on the plasma distribution, J. Geophys. Res., 108(A5), doi:10.1029/2002JA009510, 1167, 2003.
29. Johnson, R. E., and D. F. Strobel, Charge exchange in the Io torus and exosphere, J. Geophys. Res., 87, 10,385, 1982.
30. Lichtenberg, G., Massenbilanz und Energiehaushalt des Io-PIasma-Torus: Modell und Beobachtung, Ph.D. thesis, Univ. of Göttingen, Göttingen, Germany, 2001.
31. Lichtenberg, G., and N. Thomas, Detection of S (IV) 10.51 μm emission from the Io plasma torus, J. Geophys. Res., 106, 29,899, 2001.
32. Matheson, and D. E. Shemarisky, 1993, unpublished manuscript. Mazzotta, P., G. Mazzitelli, S. Colafrancesco, and N. Vittorio, Ionization balance for optically thin plasmas: Rate coefficients for all atoms and ions of the elements H to Ni, Astron. Astrophys. Suppl. Ser., 133, 403, 1998.
33. McGratri, M. A., and R. E. Johnson, Charge exchange cross sections for the Io plasma torus, J. Geophys. Res., 94, 2677, 1989.
34. McGrath, M. A., P. D. Feldman, D. F. Strobel, H. W. Moos, and G. E. Ballester, Detection of [oii] 2471 from the Io plasma torus, Ap. J., 415, 450, 1993.
35. Meyer-Vemet, N., M. Moncuquet, and S. Hoang, Temperature inversion in the Io plasma torus, Icarus, 116, 202, 1995.
36. Moreno, M.-A., and D. D. Barbosa, Mass and energy balance of the cold Io torus, J. Geophys. Res., 91, 8993, 1986.
37. Pequignot, D., P. Petitjean, and C. Boisson, Total and effective radiative recombination coefficients, Astron. Astrophys., 251, 680, 1991.
38. Richardson, J. D., and G. L. Siscoe, The problem of cooling the cold Io torus, J. Geophys. Res., 88, 2001, 1983.
39. Schreier, R., A. Eviatar, and V. M. Vasyliunas, A two-dimensional model of plasma transport and chemistry in the Jovian magnetosphere, J. Geophys. Res., 103, 19,901, 1998.
40. Shemansky, D. E., Ratio of oxygen to sulfur in the Io plasma torus, J. Geophys. Res., 92, 6141, 1987.
41. Shemansky, D. E., Energy branching in the Io plasma torus: The failure of neutral cloud theory, J. Geophys. Res., 93, 1773, 1988.
42. Shrill, J. M., and M. V. Steenberg, The ionization equilibrium of astrophysically abundant elements, Astrophys. J., 48, 95, 1982.
43. Sittler, E. C., and D. F. Strobel, Io plasma torus electrons: Voyager 1, J. Geophys. Res., 92, 5741, 1987.
44. Smith, R. A., and D. F. Strobel, Energy partitioning in the Io plasma torus, J. Geophys. Res., 90, 9469, 1985.
45. Smyth, W. H., Neutral cloud distribution in the Jovian system, Adv. Space. Res., 12,331, 1992.
46. Smyth, W. H., Energy escape rate of neutrals from Io and the implications for local magnetospheric interactions, J. Geophys. Res., 103, 11,941, 1998.
47. Smyth, W. H., and M. L. Marconi, Io's oxygen source: Determination from ground-based observations and implications for the plasma torus, J. Geo-phys. Res., 105, 7783, 2000.
48. Spencer, J. R., and N. M. Schneider, Io on the eve of the Galileo mission, Annu. Rev. Earth Planet. Sci., 24, 125-190, 1996.
49. Steffi, A., Cassini UVIS observations of the Io plasma torus, 2002, manu-script in preparation.
50. Stewart, I., UVIS observations at Jupiter, Eos Trans. AGU, 82(17), Spring Meet. Suppl., 2001.
51. Strobel, D. F., Energetics, luminosity, arid spectroscopy of Io's torus, NASA Spec. Publ., NASA-SP-494, 183, 1989.
52. Thomas, N., High resolution spectra of Io's neutral potasium and oxygen clouds, Astron. Astrophys., 313, 306, 1996.
53. Thomas, N., High resolution spectroscopy of the Io plasma torus, J. Geo-phys. Res., 106, 26,277, 2001.
54. Voronov, G. S., A practical fit formula for ionization rate coefficients of atoms and ions by electron impact: Z= 1-28, At. Data Nucl. Data Tables, 65, 1, 1997.
55. Ziegler, D. L., J. H. Newman, L. N. Goeller, K. A. Smith, and R. F. Stebbings, Single and multiple ionization of sulfur atoms by electron impact ionization, Planet. Space Sci., 30, 1269, 1982.