Europa's FUV auroral tail on Jupiter

Grodent, Denis; Gérard, Jean-Claude; Gustin, Jacques; Mauk, B. H.; Connerney, J. E. P.; Clarke, J. T.

doi:10.1029/2005GL025487

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Europa's FUV auroral tail on Jupiter

Grodent, Denis; Gérard, Jean-Claude; Gustin, Jacques et al.

2006 • In Geophysical Research Letters, 33 (6)

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https://hdl.handle.net/2268/4522

DOI
10.1029/2005GL025487

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Keywords :

Jupiter; aurora; ultraviolet; Europa; ionosphere

Abstract :

[en] Ultraviolet images of Jupiter's northern aurora obtained in 2005 confirm the existence of an electromagnetic interaction between Europa and the Jovian ionosphere. The auroral signature shows a two-component structure: a quasi-circular Europa spot, followed by a previously undetected faint tail emission trailing in the direction of corotation flow. The characteristic brightness for the auroral spot is similar to 14 +/- 1 kR above background, and approximately 7 +/- 1 kR for the tail. The spot's size is similar to 1100 km, magnetically mapping to an interaction region <= 15 Europa diameters. The auroral tail extends over similar to 5000 km, which maps along a region of at least 70 Europa diameters. The ultraviolet power emitted by both components varies from a fraction to several GW. The present study suggests auroral interaction at Europa similar to that at Io, but scaled-down by an order of magnitude, including a sub-corotating plasma plume in the geometrical wake of Europa.

Disciplines :

Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others

Author, co-author :

Grodent, Denis ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)

Gérard, Jean-Claude ; Université de Liège - ULiège > Département d'astrophys.

Gustin, Jacques ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)

Mauk, B. H.

Connerney, J. E. P.

Clarke, J. T.

Language :

English

Title :

Europa's FUV auroral tail on Jupiter

Publication date :

17 March 2006

Journal title :

Geophysical Research Letters

ISSN :

0094-8276

eISSN :

1944-8007

Publisher :

Amer Geophysical Union, Washington, United States - District of Columbia

Volume :

Issue :

Peer reviewed :

Peer Reviewed verified by ORBi

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since 23 January 2009

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Bibliography

Bagenal, F. (1992), Giant planet magnetospheres, Annu. Rev. Earth Planet. Sci., 10, 289-328.
Clarke, J. T., et al. (1998), Hubble Space Telescope imaging of Jupiter's UV aurora during the Galileo orbiter mission, J. Geophys. Res., 103, 20,217-20,236.
Clarke, J. T. (2002), Ultraviolet auroral emissions from the magnetic footprints of Io, Ganymede, and Europa on Jupiter, Nature, 415, 997-1000.
Clarke, J. T., D. Grodent, S. Cowley, E. Bunce, P. Zarka, J. Connerney, and T. Satoh (2004), Jupiter's aurora, in Jupiter: The Planet, Satellites and Magnetosphere, edited by F. Bagenal, B. McKinnon, and T. Dowling, pp. 639-670, Cambridge Univ. Press, New York.
Connerney, J. E. P., R. Baron, T. Satoh, and T. Owen (1993), Images of excited H3+ at the foot of the Io flux tube in Jupiter's atmosphere, Science, 262, 1035-1038.
Connerney, J. E. P., M. H. Acuña, N. F. Ness, and T. Satoh (1998), New models of Jupiter's magnetic field constrained by the Io flux tube footprint, J. Geophys. Res., 103, 11,929-11,939.
Crary, F. J. (1997), On the generation of an electron beam by Io, J. Geophys. Res., 102, 37-49.
Delamere, P. A., F. Bagenal, R. Ergun, and Y.-J. Su (2003), Momentum transfer between the Io plasm wake and Jupiter's ionosphere, J. Geophys. Res., 108(A6), 1241, doi:10.1029/2002JA009530.
Erkaev, N. V., V. S. Semenov, V. A. Shaidurov, D. Langmayr, H. K. Biernat, and H. O. Rucker (2002), Investigation of MHD slow shocks propagating along the Io flux tube, Int. J. Geomagn. Aeron., 3(1), 67-76.
Eviatar, A., and C. Paranicas (2006), The plasma plumes of Europa and Callisto, Icarus, 178, 360-366.
Gérard, J.-C., J. Gustin, D. Grodent, P. Delamere, and J. T. Clarke (2002), Excitation of the FUV Io tail on Jupiter: Characterization of the electron precipitation, J. Geophys. Res., 107(A11), 1394, doi:10.1029/2002JA009410.
Gérard, J.-C., A. Saglam, D. Grodent, and J. T. Clarke (2006), The morphology of the ultraviolet Io footprint emission and its control by Io's location, J. Geophys. Res., doi:10.1029/2005JA011327, in press.
Grodent, D., J. T. Clarke, J. Kim, J. H. Waite Jr., and S. W. H. Cowley (2003a), Jupiter's main auroral oval observed with HST-STIS, J. Geophys. Res., 108(A11), 1389, doi:10.1029/2003JA009921.
Grodent, D., J. T. Clarke, J. H. Waite Jr., S. W. H. Cowley, J.-C. Gérard, and J. Kim (2003b), Jupiter's polar auroral emissions, J. Geophys. Res., 108(A10), 1366, doi:10.1029/2003JA010017.
Grodent, D., J.-C. Gérard, J. T. Clarke, G. R. Gladstone, and J. H. Waite Jr. (2004), A possible auroral signature of a magnetotail reconnection process on Jupiter, J. Geophys. Res., 109, A05201, doi:10.1029/2003JA010341.
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.
Hill, T. W., and V. M. Vasyliũnas (2002), Jovian amoral signature of Io's corotational wake, J. Geophys. Res., 107(A12), 1464, doi:10.1029/ 2002JA009514.
Kivelson, M. G., K. K. Khurana, D. J. Stevenson, L. Bennett, S. Joy, C. T. Russell, R. J. Walker, C. Zimmer, and C. Polanskey (1999), Europa and Callisto: Induced or intrinsic fields in a periodically varying plasma environment, J. Geophys. Res., 104(A3), 4609-4625.
Kurth, W. S., D. A. Gurnett, A. M. Persoon, A. Roux, S. J. Bolton, and C. J. Alexander (2001), The plasma environment of Europa, Planet. Space Sci., 49, 345-363.
Mauk, B. H., J. T. Clarke, D. Grodent, J. H. Waite Jr., C. P. Paranicas, and D. J. Williams (2002), Transient aurora on Jupiter from injections of magnetospheric electrons, Nature, 415, 1003-1005.
Mauk, B. H., D. G. Mitchell, S. M. Krimigis, E. C. Roelof, and C. P. Paranicas (2004), Energetic neutral atoms from a trans-Europa gas torus at Jupiter, Nature, 421, 920-922.
Paterson, W. R., L. A. Frank, and K. L. Ackerson (1999), Galileo plasma observations at Europa: Ion energy spectra and moments, J. Geophys. Res., 104, 22,779-22,791.
Saur, J., F. M. Neubauer, D. F. Strobel, and M. E. Summers (1999), Three-dimensional plasma simulation of Io's interaction with the Io plasma torus, J. Geophys. Res., 104, 25,105-25,126.
Schreier, R., A. Eviatar, V. M. Vasyliũnas, and J. D. Richardson (1993), Modeling the Europa plasma torus, J. Geophys. Res., 98, 21,231-21,243.
Smyth, W. H., and M. L. Marconi (2000), Io's oxygen source: Determination from ground-based observations and implications for the plasma torus, J. Geophys. Res., 105, 7783-7792.