Rosie Johnson - Jupiter's polar ionospheric flows

Rosie Johnson (Aberystwyth University)

Abstract:
Since 2016, IRTF-iSHELL observations have been used to provide ground-based support for the NASA-Juno mission, observing Jupiter’s aurora while Juno takes in-situ measurements of the magnetosphere as well as observing the aurora. These ground-based measurements are critical as Juno-JIRAM lacks the spectral resolution to measure the Doppler shift of the H3+ spectra, from which the line-of-sight velocity can be derived and the ionospheric flows inferred.
In this seminar I will present the H3+ parameters measured in Jupiter’s southern auroral region during PJ4. I will discuss how these flows compare to past observations and models, and how they relate to some of the Juno discoveries. Furthermore, I will outline our plans for the H3+ line-of-sight velocities and how they will be used to develop a novel method to study the ionospheric and magnetospheric current system at Jupiter and how it is connected to the solar wind, which we nickname ‘Jupidarn’.

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MIST Online Seminar Series: https://www.mist.ac.uk/meetings/mist-...

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