Characterization of auroral current systems in Saturn's magnetosphere: High-latitude Cassini observations

Journal of Geophysical Research: Space Physics

Volumn 114, Issue 6, 2009, Pages

  Talboys, D L ^c   Arridge, C S ^a,b   Bunce, E J ^c   Coates, A J ^a,b   Cowley, S W H ^c   Dougherty, M K ^d  

^a UNIVERSITY COLLEGE LONDON   (United Kingdom)

^b UNIVERSITY COLLEGE LONDON   (United Kingdom)

^c UNIVERSITY OF LEICESTER   (United Kingdom)

^d IMPERIAL COLLEGE LONDON   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 70349422211     PISSN: None     EISSN: 21699402     Source Type: Journal    
DOI: 10.1029/2008JA013846     Document Type: Article

References (32)

1. Andrews, D. J., E. J. Bunce, S. W. H. Cowley, M. K. Dougherty, G. Provan, and D. J. Southwood (2008), Planetary period oscillations in Saturn's magnetosphere: Phase relation of equatorial magnetic field oscillations and Saturn kilometric radiation modulation, J. Geophys. Res., 113, A09205, doi:10.1029/2007JA012937.
2. Arridge, C. S., N. Achilleos, M. K. Dougherty, K. K. Khurana, and C. T. Russell (2006), Modeling the size and shape of Saturn's magnetopause with variable dynamic pressure, J. Geophys. Res., 111, A 11227, doi:10.1029/ 2005JA011574.
3. Badman, S. V., S. W. H. Cowley, J.-C. Gérard, and D. Grodent (2006), A statistical analysis of the location and width of Saturn's southern auroras, Ann. Geophys., 24, 3533-3545.
4. Bunce, E. J., S. W. H. Cowley, and J. A. Wild (2003), Azimuthal magnetic fields in Saturn's magnetosphere: Effects associated with plasma subcorotation and the magnetopause-tail current system, Ann. Geophys., 21, 1709-1722.
5. Bunce, E. J., S. W. H. Cowley, I.I. Alexeev, C. S. Arridge, M. K. Dougherty, J. D. Nichols, and C. T. Russell (2007), Cassini observations of the variation of Saturn's ring current parameters with system size, J. Geophys. Res., 112, A10202, doi:10.1029/2007JA012275.
6. Bunce, E. J., C. S. Arridge, S. W. H. Cowley, and M. K. Dougherty (2008a), Magnetic field structure of Saturn's dayside magnetosphere and its mapping to the ionosphere: Results from ring-current modeling, J. Geophys. Res., 113, A02207, doi:10.1029/2007JA012538.
7. Bunce, E. J., et al. (2008b), Origin of Saturn's aurora: Simultaneous observations by Cassini and the Hubble Space Telescope, J. Geophys. Res., 113, A09209, doi:10.1029/2008JA013257.
8. Clarke, J. T., et al. (2009), The response of Jupiter's and Saturn's auroral activity to the solar wind, J. Geophys. Res., 114, A05210, doi:10.1029/2008JA013694.
9. Cowley, S. W. H. (2000), Magnetosphere-ionosphere interactions: A tutorial review, in Magnetospheric Current Systems, Geophys. Monogr. Ser., vol.118, edited by S. Ohtani et al., pp. 91-106, AGU, Washington, D. C.
10. Cowley, S. W. H., and E. J. Bunce (2001), Origin of the main auroral oval in Jupiter's coupled magnetosphere-ionosphere system, Planet. Space Sci., 49, 1067-1088, doi:10.1016/S0032-0633(00)00167-7.
11. Cowley, S. W. H., and E. J. Bunce (2003), Corotation-driven magnetosphere-ionosphere coupling currents in Saturn's magnetosphere and their relation to the auroras, Ann. Geophys., 21, 1691-1707.
12. Cowley, S. W. H., E. J. Bunce, and R. Prangé (2004a), Saturn's polar ionospheric flows and their relation to the main auroral oval, Ann. Geophys., 22, 1379-1394.
13. Cowley, S. W. H., E. J. Bunce, and J. M. O'Rourke (2004b), A simple quantitative model of plasma flows and currents in Saturn's polar ionosphere, J. Geophys. Res., 109, A05212, doi:10.1029/2003JA010375.
14. Cowley, S. W. H., D. M. Wright, E. J. Bunce, A. C. Carter, M. K. Dougherty, G. Giampieri, J. D. Nichols, and T. R. Robinson (2006), Cassini observations of planetary-period magnetic field oscillations in Saturn's magnetosphere: Doppler shifts and phase motion, Geophys. Res. Lett., 33, L07104, doi:10.1029/2005GL025522.
15. Cowley, S. W. H., C. S. Arridge, E. J. Bunce, J. T. Clarke, A. J. Coates, M. K. Dougherty, J.-C. Gérard, D. Grodent, J. D. Nichols, and D. L. Talboys (2008), Auroral current systems in Saturn's magnetosphere: Comparison of theoretical models with Cassini and HST observations, Ann. Geophys., 26, 2613-2630.
16. Dougherty, M. K., et al. (2005), Cassini magnetometer observations during Saturn orbit insertion, Science, 307, 1266-1270, doi:10.1126/science. 1106098. (Pubitemid 40299968)
17. Espinosa, S. A., and M. K. Dougherty (2000), Periodic perturbations in Saturn's magnetic field, Geophys. Res. Lett., 27, 2785-2788, doi:10.1029/2000GL000048. (Pubitemid 32040263)
18. Espinosa, S. A., D. J. Southwood, and M. K. Dougherty (2003a), Reanalysis of Saturn's magnetospheric field data view of spin-periodic perturbations,/ Geophys. Res., 108(A2), 1085, doi:10.1029/2001JA005083.
19. Espinosa, S. A., D. J. Southwood, and M. K. Dougherty (2003b), How can Saturn impose its rotation period in a non-corotating magnetosphere?, J. Geophys. Res., 108(A2), 1086, doi:10.1029/2001JA005084.
20. Gérard, J.-C., et al. (2006), Saturn's auroral morphology and activity during quiet magnetospheric conditions, J. Geophys. Res., 111, A12210, doi:10.1029/2006JA011965.
21. Grodent, D., J.-C. Gérard, S. W. H. Cowley, E. J. Bunce, and J. T. Clarke (2005), Variable morphology of Saturn's southern ultraviolet aurora, J. Geophys. Res., 110, A07215, doi:10.1029/2004JA010983. (Pubitemid 44116582)
22. Hill, T. W. (1979), Inertial limit on corotation, J. Geophys. Res., 84, 6554-6558, doi: 10.1029/JA084iA11p06554.
23. Hill, T. W. (2001), The Jovian auroral oval, J. Geophys. Res., 106, 8101-8107, doi:10.1029/2000JA000302.
24. Hill, T. W., A. M. Rymer, J. L. Burch, F. J. Crary, D. T. Young, M. F. Thomsen, D. Delapp, N. André, A. J. Coates, and G. R. Lewis (2005), Evidence for rotationally driven plasma transport in Saturn's magnetosphere, Geophys. Res. Lett., 32, L14S10, doi:10.1029/2005GL022620.
25. Nichols, J. D., J. T. Clarke, S. W. H. Cowley, J. Duval, A. J. Farmer, J.-C. Gérard, D. Grodent, and S. Wannawichian (2008), The oscillation of Saturn's southern auroral oval, J. Geophys. Res., 113, Al 1205, doi:10.1029/2008JA013444.
26. Provan, G., D. J. Andrews, C. S. Arridge, A. J. Coates, S. W. H. Cowley, S. E. Milan, M. K. Dougherty, and D. M. Wright (2009), Polarization and phase of planetary-period magnetic field oscillations on high-latitude field lines in Saturn's magnetosphere, J. Geophys. Res., 114, A02225, doi:10.1029/2008JA013782.
27. Saur, J., et al. (2006), Anti-planetward auroral electron beams at Saturn, Nature, 439, 699-702, doi:10.1038/nature04401. (Pubitemid 43237612)
28. Schippers, P., et al. (2008), Multi-instrument analysis of electron populations in Saturn's magnetosphere, J. Geophys. Res., 113, A07208, doi:10.1029/2008JA013098.
29. Southwood, D. J., and M. G. Kivelson (2001), A new perspective concerning the influence of the solar wind on the Jovian magnetosphere, J. Geophys. Res., 106, 6123-6130, doi:10.1029/2000JA000236.
30. Southwood, D. J., and M. G. Kivelson (2007), Saturn magnetospheric dynamics: Elucidation of a camshaft model, J. Geophys. Res., 112, A12222, doi:10.1029/2007JA012254.
31. Vasyliunas, V. M. (1983), Plasma distribution and flow, in Physics of the Jovian Magnetosphere, edited by A. J. Dessler, pp. 95-453, Cambridge Univ. Press, Cambridge, U. K.
32. Young, D. T., et al. (2005), Composition and dynamics of plasma in Saturn's magnetosphere, Science, 307, 1262-1266, doi:10.1126/science.1106151. (Pubitemid 40299967)