Details

Autor(en) / Beteiligte

• Szalay, J. R.
• Allegrini, F.
• Bagenal, F.
• Bolton, S.
• Clark, G.
• Connerney, J. E. P.
• Dougherty, L. P.
• Ebert, R. W.
• Gershman, D. J.
• Kurth, W. S.
• Levin, S.
• Louarn, P.
• Mauk, B.
• McComas, D. J.
• Paranicas, C.
• Ranquist, D.
• Reno, M.
• Thomsen, M. F.
• Valek, P. W.
• Weidner, S.
• Wilson, R. J.

Titel

Plasma measurements in the Jovian polar region with Juno/JADE

Ist Teil von

• Geophysical research letters, 2017-07, Vol.44 (14), p.7122-7130

Ort / Verlag

Washington: Blackwell Publishing Ltd

Erscheinungsjahr

2017

Link zum Volltext

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• Jupiter's main auroral oval provides a window into the complex magnetospheric dynamics of the Jovian system. The Juno spacecraft entered orbit about Jupiter on 5 July 2016 and carries on board the Auroral Distributions Experiment (JADE) that can directly sample the auroral plasma structures. Here we identify five distinct regimes in the JADE data based on composition/energy boundaries and magnetic field mappings, which exhibit considerable symmetry between the northern and southern passes. These intervals correspond to periods when Juno was connected to the Io torus, inner plasma sheet, middle plasma sheet, outer plasma sheet, and the polar region. When connected to the torus and inner plasma sheet, the heavy ions are consistent with a corotating pickup population. For Juno's first perijove, we do not find evidence for a broad auroral acceleration region at Jupiter's main auroral oval for energies below 100 keV. Key Points Juno/JADE made high temporal resolution measurements at high latitudes of the Io torus and plasma sheet plasma populations We identify regions where Juno was connected to the Io torus, inner plasma sheet, middle plasma sheet, outer plasma sheet, and high‐latitude polar region For JADE's first auroral transits at ~0.7 RJ altitude and <100 keV, we find no evidence for a broad Jovian auroral acceleration region