Premium
Preliminary JIRAM results from Juno polar observations: 2. Analysis of the Jupiter southern H 3 + emissions and comparison with the north aurora
Author(s) -
Adriani A.,
Mura A.,
Moriconi M. L.,
Dinelli B. M.,
Fabiano F.,
Altieri F.,
Sindoni G.,
Bolton S. J.,
Connerney J. E. P.,
Atreya S. K.,
Bagenal F.,
Gérard J.C. M. C.,
Filacchione G.,
Tosi F.,
Migliorini A.,
Grassi D.,
Piccioni G.,
Noschese R.,
Cicchetti A.,
Gladstone G. R.,
Hansen C.,
Kurth W. S.,
Levin S. M.,
Mauk B. H.,
McComas D. J.,
Olivieri A.,
Turrini D.,
Stefani S.,
Amoroso M.
Publication year - 2017
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2017gl072905
Subject(s) - jovian , jupiter (rocket family) , nadir , physics , atmosphere of jupiter , spectrometer , polar , astronomy , methane , infrared , astrophysics , environmental science , geology , saturn , optics , planet , satellite , spacecraft , chemistry , organic chemistry
The Jupiter InfraRed Auroral Mapper (JIRAM) aboard Juno observed the Jovian South Pole aurora during the first orbit of the mission. H 3 + (trihydrogen cation) and CH 4 (methane) emissions have been identified and measured. The observations have been carried out in nadir and slant viewing both by a L‐filtered imager and a 2–5 μm spectrometer. Results from the spectral analysis of the all observations taken over the South Pole by the instrument are reported. The coverage of the southern aurora during these measurements has been partial, but sufficient to determine different regions of temperature and abundance of the H 3 + ion from its emission lines in the 3–4 μm wavelength range. Finally, the results from the southern aurora are also compared with those from the northern ones from the data taken during the same perijove pass and reported by Dinelli et al. (2017).