Preliminary JIRAM results from Juno polar observations: 1. Methodology and analysis applied to the Jovian northern polar region

B. M. Dinelli; F. Fabiano; A. Adriani; F. Altieri; M. L. Moriconi; A. Mura; G. Sindoni; G. Filacchione; F. Tosi; A. Migliorini; D. Grassi; G. Piccioni; R. Noschese; A. Cicchetti; S. J. Bolton; J. E.P. Connerney; S. K. Atreya; F. Bagenal; G. R. Gladstone; C. J. Hansen; W. S. Kurth; S. M. Levin; B. H. Mauk; D. J. McComas; J. C. Gèrard; D. Turrini; S. Stefani; M. Amoroso; A. Olivieri

doi:10.1002/2017GL072929

Preliminary JIRAM results from Juno polar observations: 1. Methodology and analysis applied to the Jovian northern polar region

B. M. Dinelli, F. Fabiano, A. Adriani, F. Altieri, M. L. Moriconi, A. Mura, G. Sindoni, G. Filacchione, F. Tosi, A. Migliorini, D. Grassi, G. Piccioni, R. Noschese, A. Cicchetti, S. J. Bolton, J. E.P. Connerney, S. K. Atreya, F. Bagenal, G. R. Gladstone, C. J. HansenW. S. Kurth, S. M. Levin, B. H. Mauk, D. J. McComas, J. C. Gèrard, D. Turrini, S. Stefani, M. Amoroso, A. Olivieri

Astrophysical Sciences

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17 Scopus citations

Abstract

During the first orbit around Jupiter of the NASA/Juno mission, the Jovian Auroral Infrared Mapper (JIRAM) instrument observed the auroral regions with a large number of measurements. The measured spectra show both the emission of the H₃⁺ ion and of methane in the 3–4 μm spectral region. In this paper we describe the analysis method developed to retrieve temperature and column density (CD) of the H₃⁺ ion from JIRAM spectra in the northern auroral region. The high spatial resolution of JIRAM shows an asymmetric aurora, with CD and temperature ovals not superimposed and not exactly located where models and previous observations suggested. On the main oval averaged H₃⁺ CDs span between 1.8 × 10¹² cm⁻² and 2.8 × 10¹² cm⁻², while the retrieved temperatures show values between 800 and 950 K. JIRAM indicates a complex relationship among H₃⁺ CDs and temperatures on the Jupiter northern aurora.

Original language	English (US)
Pages (from-to)	4625-4632
Number of pages	8
Journal	Geophysical Research Letters
Volume	44
Issue number	10
DOIs	https://doi.org/10.1002/2017GL072929
State	Published - May 28 2017

All Science Journal Classification (ASJC) codes

Geophysics
Earth and Planetary Sciences(all)

Keywords

H3+
JIRAM
Juno
Jupiter
aurora

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10.1002/2017GL072929

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Dinelli, B. M., Fabiano, F., Adriani, A., Altieri, F., Moriconi, M. L., Mura, A., Sindoni, G., Filacchione, G., Tosi, F., Migliorini, A., Grassi, D., Piccioni, G., Noschese, R., Cicchetti, A., Bolton, S. J., Connerney, J. E. P., Atreya, S. K., Bagenal, F., Gladstone, G. R., ... Olivieri, A. (2017). Preliminary JIRAM results from Juno polar observations: 1. Methodology and analysis applied to the Jovian northern polar region. Geophysical Research Letters, 44(10), 4625-4632. https://doi.org/10.1002/2017GL072929

@article{c25d2e8dbe1d4c79bf6b160c7135c86f,

title = "Preliminary JIRAM results from Juno polar observations: 1. Methodology and analysis applied to the Jovian northern polar region",

abstract = "During the first orbit around Jupiter of the NASA/Juno mission, the Jovian Auroral Infrared Mapper (JIRAM) instrument observed the auroral regions with a large number of measurements. The measured spectra show both the emission of the H3+ ion and of methane in the 3–4 μm spectral region. In this paper we describe the analysis method developed to retrieve temperature and column density (CD) of the H3+ ion from JIRAM spectra in the northern auroral region. The high spatial resolution of JIRAM shows an asymmetric aurora, with CD and temperature ovals not superimposed and not exactly located where models and previous observations suggested. On the main oval averaged H3+ CDs span between 1.8 × 1012 cm−2 and 2.8 × 1012 cm−2, while the retrieved temperatures show values between 800 and 950 K. JIRAM indicates a complex relationship among H3+ CDs and temperatures on the Jupiter northern aurora.",

keywords = "H3+, JIRAM, Juno, Jupiter, aurora",

author = "Dinelli, {B. M.} and F. Fabiano and A. Adriani and F. Altieri and Moriconi, {M. L.} and A. Mura and G. Sindoni and G. Filacchione and F. Tosi and A. Migliorini and D. Grassi and G. Piccioni and R. Noschese and A. Cicchetti and Bolton, {S. J.} and Connerney, {J. E.P.} and Atreya, {S. K.} and F. Bagenal and Gladstone, {G. R.} and Hansen, {C. J.} and Kurth, {W. S.} and Levin, {S. M.} and Mauk, {B. H.} and McComas, {D. J.} and G{\`e}rard, {J. C.} and D. Turrini and S. Stefani and M. Amoroso and A. Olivieri",

note = "Funding Information: The JIRAM project has been funded by the Italian Space Agency contract 2016-23-H.0. The data reported in this paper are available upon request to the main author. Publisher Copyright: {\textcopyright}2017. American Geophysical Union. All Rights Reserved.",

year = "2017",

month = may,

day = "28",

doi = "10.1002/2017GL072929",

language = "English (US)",

volume = "44",

pages = "4625--4632",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "American Geophysical Union",

number = "10",

}

Dinelli, BM, Fabiano, F, Adriani, A, Altieri, F, Moriconi, ML, Mura, A, Sindoni, G, Filacchione, G, Tosi, F, Migliorini, A, Grassi, D, Piccioni, G, Noschese, R, Cicchetti, A, Bolton, SJ, Connerney, JEP, Atreya, SK, Bagenal, F, Gladstone, GR, Hansen, CJ, Kurth, WS, Levin, SM, Mauk, BH, McComas, DJ, Gèrard, JC, Turrini, D, Stefani, S, Amoroso, M & Olivieri, A 2017, 'Preliminary JIRAM results from Juno polar observations: 1. Methodology and analysis applied to the Jovian northern polar region', Geophysical Research Letters, vol. 44, no. 10, pp. 4625-4632. https://doi.org/10.1002/2017GL072929

TY - JOUR

T1 - Preliminary JIRAM results from Juno polar observations

T2 - 1. Methodology and analysis applied to the Jovian northern polar region

AU - Dinelli, B. M.

AU - Fabiano, F.

AU - Adriani, A.

AU - Altieri, F.

AU - Moriconi, M. L.

AU - Mura, A.

AU - Sindoni, G.

AU - Filacchione, G.

AU - Tosi, F.

AU - Migliorini, A.

AU - Grassi, D.

AU - Piccioni, G.

AU - Noschese, R.

AU - Cicchetti, A.

AU - Bolton, S. J.

AU - Connerney, J. E.P.

AU - Atreya, S. K.

AU - Bagenal, F.

AU - Gladstone, G. R.

AU - Hansen, C. J.

AU - Kurth, W. S.

AU - Levin, S. M.

AU - Mauk, B. H.

AU - McComas, D. J.

AU - Gèrard, J. C.

AU - Turrini, D.

AU - Stefani, S.

AU - Amoroso, M.

AU - Olivieri, A.

N1 - Funding Information: The JIRAM project has been funded by the Italian Space Agency contract 2016-23-H.0. The data reported in this paper are available upon request to the main author. Publisher Copyright: ©2017. American Geophysical Union. All Rights Reserved.

PY - 2017/5/28

Y1 - 2017/5/28

N2 - During the first orbit around Jupiter of the NASA/Juno mission, the Jovian Auroral Infrared Mapper (JIRAM) instrument observed the auroral regions with a large number of measurements. The measured spectra show both the emission of the H3+ ion and of methane in the 3–4 μm spectral region. In this paper we describe the analysis method developed to retrieve temperature and column density (CD) of the H3+ ion from JIRAM spectra in the northern auroral region. The high spatial resolution of JIRAM shows an asymmetric aurora, with CD and temperature ovals not superimposed and not exactly located where models and previous observations suggested. On the main oval averaged H3+ CDs span between 1.8 × 1012 cm−2 and 2.8 × 1012 cm−2, while the retrieved temperatures show values between 800 and 950 K. JIRAM indicates a complex relationship among H3+ CDs and temperatures on the Jupiter northern aurora.

AB - During the first orbit around Jupiter of the NASA/Juno mission, the Jovian Auroral Infrared Mapper (JIRAM) instrument observed the auroral regions with a large number of measurements. The measured spectra show both the emission of the H3+ ion and of methane in the 3–4 μm spectral region. In this paper we describe the analysis method developed to retrieve temperature and column density (CD) of the H3+ ion from JIRAM spectra in the northern auroral region. The high spatial resolution of JIRAM shows an asymmetric aurora, with CD and temperature ovals not superimposed and not exactly located where models and previous observations suggested. On the main oval averaged H3+ CDs span between 1.8 × 1012 cm−2 and 2.8 × 1012 cm−2, while the retrieved temperatures show values between 800 and 950 K. JIRAM indicates a complex relationship among H3+ CDs and temperatures on the Jupiter northern aurora.

KW - H3+

KW - JIRAM

KW - Juno

KW - Jupiter

KW - aurora

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U2 - 10.1002/2017GL072929

DO - 10.1002/2017GL072929

M3 - Article

AN - SCOPUS:85019925315

SN - 0094-8276

VL - 44

SP - 4625

EP - 4632

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 10

ER -

Preliminary JIRAM results from Juno polar observations: 1. Methodology and analysis applied to the Jovian northern polar region

Abstract

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