Auxiliary material for Paper 2013GL057783  
The multiple spots of the Ganymede auroral footprint
B. Bonfond,1 
S. Hess,2
F. Bagenal, 3
J.-C. Gérard,1
D. Grodent, 1
A. Radioti, 1
J. Gustin, 1
J. T. Clarke, 4
 
1 Laboratoire de Physique Atmosphérique et Planétaire (LPAP), Université de Liège, Liège, Belgium.
2 Université Versailles St Quentin, France
3 University of Colorado, USA
4 Boston University, USA.

Geophys. Res. Let., doi:

2013GL057783_ms01 - Illustration of the evolution of the relative location of the Main Alfvén Wings (blue) and the Trans-hemispheric Electron Beams (red) as the location of the satellite in the plasma torus/sheet (shown in yellow) changes. The red arrow is the Jovian rotation axis and the yellow arrow is the magnetic dipole axis. The distance between the feet of the Main Alfvén Wings and the Trans-hemispheric Electron Beams is null when the satellite is at the centrifugal (i.e. plasma torus/sheet) equator and increases as it moves away.

2013GL057783_ms02 - Illustration of the evolution of the relative location of the Main Alfvén Wings (blue) and the Reflected Alfvén Wings (fainter blue) as the location of the satellite in the plasma torus/sheet (shown in yellow) changes. The red arrow is the Jovian rotation axis and the yellow arrow is the magnetic dipole axis. The distance between the feet of the Main Alfvén Wing and the Reflected Alfvén Wing in the northern (southern) hemisphere is minimum when the satellite is close to the southern (northern) edge of the plasma torus/sheet and maximum at the northern (southern) edge

2013GL057783_ms03 - Animation of the polar projections of images acquired on 13 April 2007 with the ACS instrument (also shown on Figure 1). A zoom on the Ganymede footprint can be seen in the square on the bottom left of the images. These projections are fixed in System III, 0° longitude is on the top and 90° in the right. The motion of the Ganymede and Io (top of the image) footprint spots is very distinctive from the equatorward co-rotating features. Such co-rotating features remain stationary on System III fixed polar projections.

2013GL057783_ms04 - Animation of the polar projections of images acquired on 21 January 2001 with the STIS instrument (also shown on Figure 2). A zoom on the Ganymede footprint can be seen in the square on the bottom left of the images. These projections are fixed in System III, 0° longitude is on the top and 90° in the right.

2013GL057783_ms05 - Animation of the polar projections of images acquired on 20 February 2007 with the ACS instrument (also shown on Figure 1). A zoom on the Ganymede footprint can be seen in the square on the bottom left of the images. These projections are fixed in System III, 0° longitude is on the top and 90° in the right.

2013GL057783_ms06 - Animation of the polar projections of images acquired on 24 May 2007 with the ACS instrument (also shown on Figure 1). A zoom on the Ganymede footprint can be seen in the square on the bottom left of the images. These projections are fixed in System III, 0° longitude is on the top and 90° in the right.

2013GL057783_ms07 - Animation of the polar projections of images acquired on 19 May 2007 with the ACS instrument (also shown on Figure 1). A zoom on the Ganymede footprint can be seen in the square on the bottom left of the images. These projections are fixed in System III, 0° longitude is on the top and 90° in the right.

2013GL057783_ms08 - Animation of the polar projections of images acquired on 02 June 2007 with the ACS instrument (also shown on Figure 1). A zoom on the Ganymede footprint can be seen in the square on the bottom left of the images. These projections are fixed in System III, 0° longitude is on the top and 90° in the right.

2013GL057783_ms09 - Left panel: Plot of the density of the different ion species (H+, S+, S++, O+, O++, S+++) in the plasma sheet along the Ganymede flux tube. The electron density is also plotted as well as the mass density (in bold). Right panel: The solid line represents the Alfvén speed profile along the Ganymede flux tube. The dashed line represents the integrated Alfvén progagation time from the centrifugal equator.