Article (Scientific journals)
Temporal and Spectral Studies by XMM-Newton of Jupiter's X-ray Auroras During a Compression Event
Wibisono, A. D.; Branduardi-Raymont, G.; Dunn, W. R. et al.
2020In Journal of Geophysical Research. Space Physics, 125 (5)
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Keywords :
Jupiter; X-rays
Abstract :
[en] We report the temporal and spectral results of the first XMM-Newton observation of Jupiter's X-ray auroras during a clear magnetospheric compression event on June 2017 as confirmed by data from the Jovian Auroral Distributions Experiment (JADE) instrument onboard Juno. The northern and southern auroras were visible twice and thrice respectively as they rotated in and out of view during the ∼23-hr (almost 2.5 Jupiter rotations) long XMM-Newton Jovian-observing campaign. Previous auroral observations by Chandra and XMM-Newton have shown that the X-ray auroras sometimes pulse with a regular period. We applied wavelet and fast Fourier transforms (FFTs) on the auroral light curves to show that, following the compression event, the X-ray auroras exhibited a recurring 23- to 27-min periodicity that lasted over 12.5 hr (longer than a Jupiter rotation). This periodicity was observed from both the northern and southern auroras, suggesting that the emission from both poles was caused by a shared driver. The soft X-ray component of the auroras is due to charge exchange processes between precipitating ions and neutrals in Jupiter's atmosphere. We utilized the Atomic Charge Exchange (ACX) spectral package to produce solar wind and iogenic plasma models to fit the auroral spectra in order to identify the origins of these ions. For this observation, the iogenic model gave the best fit, which suggests that the precipitating ions are from iogenic plasma in Jupiter's magnetosphere. ©2020. The Authors.
Research Center/Unit :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Wibisono, A. D.;  Mullard Space Science Laboratory, Department of Space & Climate Physics, University College London, London, United Kingdom, The Centre for Planetary Sciences at UCL/Birkbeck, London, United Kingdom
Branduardi-Raymont, G.;  Mullard Space Science Laboratory, Department of Space & Climate Physics, University College London, London, United Kingdom, The Centre for Planetary Sciences at UCL/Birkbeck, London, United Kingdom
Dunn, W. R.;  Mullard Space Science Laboratory, Department of Space & Climate Physics, University College London, London, United Kingdom, The Centre for Planetary Sciences at UCL/Birkbeck, London, United Kingdom, Smithsonian Astrophysical Observatory, Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States
Coates, A. J.;  Mullard Space Science Laboratory, Department of Space & Climate Physics, University College London, London, United Kingdom, The Centre for Planetary Sciences at UCL/Birkbeck, London, United Kingdom
Weigt, D. M.;  Department of Physics and Astronomy, University of Southampton, Southampton, United Kingdom
Jackman, C. M.;  Department of Physics and Astronomy, University of Southampton, Southampton, United Kingdom, Dublin Institute for Advanced Studies, Dublin, Ireland
Yao, Zhonghua ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Tao, C.;  National Institute of Information and Communications Technology, Koganei, Japan
Allegrini, F.;  Southwest Research Institute, San Antonio, TX, United States, University of Texas at San Antonio, San Antonio, TX, United States
Grodent, Denis  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Chatterton, J.;  Department of Science, St. Gilgen International School, St. Gilgen, Austria
Gerasimova, A.;  Department of Science, St. Gilgen International School, St. Gilgen, Austria
Kloss, L.;  Department of Science, St. Gilgen International School, St. Gilgen, Austria
Milović, J.;  Department of Science, St. Gilgen International School, St. Gilgen, Austria
Orlandiayni, L.;  Department of Science, St. Gilgen International School, St. Gilgen, Austria
Preidl, A.-K.;  Department of Science, St. Gilgen International School, St. Gilgen, Austria
Radler, C.;  Department of Science, St. Gilgen International School, St. Gilgen, Austria
Summhammer, L.;  Department of Science, St. Gilgen International School, St. Gilgen, Austria
Fleming, D.;  Department of Science, St. Gilgen International School, St. Gilgen, Austria
More authors (9 more) Less
Language :
English
Title :
Temporal and Spectral Studies by XMM-Newton of Jupiter's X-ray Auroras During a Compression Event
Publication date :
2020
Journal title :
Journal of Geophysical Research. Space Physics
ISSN :
2169-9380
eISSN :
2169-9402
Publisher :
Blackwell Publishing Ltd
Volume :
125
Issue :
5
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
STSCI - Space Telescope Science Institute [US-MD] [US-MD]
NASA - National Aeronautics and Space Administration [US-DC] [US-DC]
BELSPO - Belgian Science Policy Office [BE]
UCL - University College London [GB]
JSPS - Japan Society for the Promotion of Science [JA]
SFI - Science Foundation Ireland [IE]
ESA - European Space Agency [FR]
Chinese Academy of Sciences [CN]
SFTC - Science and Technology Facilities Council [GB]
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