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UV emissions of Jupiter: exploration of the high-latitude regions through the UV spectrograph on NASA's Juno mission
Hue, Vincent; Gladstone, G. Randall; Versteeg, Maarten et al.
2016Division for Planetary Sciences 48th DPS Meeting / European Planetary Sciences Congress EPSC 11
 

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Keywords :
Juno; Jupiter; Aurora
Abstract :
[en] The Juno mission offers the opportunity to study Jupiter, from its inner structure to its magnetospheric environment. Juno was launched on August 2011 and its Jupiter orbit insertion (JOI) planned for July 4th 2016, will place Juno in a 53.5 days capture orbit. A period reduction maneuver will be performed two orbits later to place Juno into 14-days elliptical orbits for the duration of the nominal mission, which includes 36 orbits. Juno-UVS is a UV spectrograph with a bandpass of 70 ≤ λ ≤ 205 nm, designed to characterize Jupiter UV emissions. One of the main additions of UVS compared to its predecessors is a 2.54 mm tantalum shielding, to protect it from the harsh radiation environment at Jupiter, and a scan mirror, to allow for targeting specific auroral regions during perijove passes. The scan mirror is located at the front end of the instrument and will be used to look at +/- 30° perpendicular to the Juno spin plane. The entrance slit of UVS has a dog-bone shape composed by three sections with field of views of 0.2°x2.5°, 0.025°x2.0° and 0.2°x2.5°, as projected onto the sky. It will provide new constraints on Jupiter’s auroral nightside morphology and spectral features as well as the vertical structure of these emissions. It will bring remote-sensing constraints for the onboard waves and particle instruments (JADE, JEDI, Waves and MAG). The ability to change the pointing will allow relating the observed UV brightness of the regions magnetically connected to where Juno flies with the particles and waves measurements. We will discuss the planned observations and scientific targets for the nominal mission orbital sequence, which will consist of three UV datasets per orbit. We will present the results from the first orbit. As Juno orbit evolves during the mission, we will also present how these objectives evolve over time.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Hue, Vincent;  Southwest Research Institute
Gladstone, G. Randall;  Southwest Research Institute
Versteeg, Maarten;  Southwest Research Institute
Greathouse, Thomas K.;  Southwest Research Institute
Davis, Michael;  Southwest Research Institute
Gérard, Jean-Claude  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > STAR Institute / LPAP
Grodent, Denis  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > STAR Institute / LPAP
Bonfond, Bertrand  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > STAR Institute / LPAP
Language :
English
Title :
UV emissions of Jupiter: exploration of the high-latitude regions through the UV spectrograph on NASA's Juno mission
Publication date :
October 2016
Event name :
Division for Planetary Sciences 48th DPS Meeting / European Planetary Sciences Congress EPSC 11
Event organizer :
American Astronomical Society
Event place :
Pasadena, CA, United States
Event date :
16-21 October 2016
Audience :
International
References of the abstract :
2016DPS....4840303H
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since 31 January 2017

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