Poster (Scientific congresses and symposiums)
Anticipating Juno Observations of the Magnetosphere of Jupiter
Bunnell; Fowler; Bagenal et al.
2012AGU Fall Meeting 2012
 

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Keywords :
Juno; Jupiter; magnetosphere
Abstract :
[en] The Juno spacecraft will arrive at Jupiter in 2016 and will go into polar orbit. Juno will make the first exploration of the polar regions of Jupiter's vast magnetosphere, combining in situ particles and fields measurements with remote sensing of auroral emissions in the UV, IR and radio. The primary science period comprises ~30 orbits with 11-day periods with a~1.06Rj perijove, allowing Juno to duck under the hazardous synchrotron radiation belts. Apojove is at ~38Rj. The oblateness of the planet causes the orbit to precess with the major axis moving progressively south at about 1 degree per orbit, eventually bringing the spacecraft into the radiation belts. This orbit allows unprecedented views of the aurora and exploration of the auroral acceleration regions. We present an overview of anticipated Juno observations based on models of the Jovian magnetosphere. On approach to Jupiter and over a capture orbit that extends to ~180Rj on the dawn flank, Juno will traverse the magnetosheath, magnetopause and boundary layer regions of the magnetosphere. Due to the high plasma pressures in the magnetospheric plasmasheet the magnetosphere of Jupiter is known to vary substantially with the changes in the solar wind dynamic pressure. We use Ulysses solar wind data obtained around 5 AU to predict the conditions that Juno will observe over the several months it will spend in these boundary regions.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Bunnell;  University of Colorado at Boulder - CU > Laboratory for Atmospheric and Space Physics
Fowler;  University of Colorado at Boulder - CU > Laboratory for Atmospheric and Space Physics
Bagenal;  University of Colorado at Boulder - CU > Laboratory for Atmospheric and Space Physics
Bonfond, Bertrand  ;  Southwest Research Institute
Language :
English
Title :
Anticipating Juno Observations of the Magnetosphere of Jupiter
Publication date :
07 December 2012
Event name :
AGU Fall Meeting 2012
Event organizer :
American Geophysical Union
Event place :
San Francisco, United States - California
Event date :
from 03-12-2012 to 07-12-2012
Audience :
International
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since 15 January 2013

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