Braving the Dawn Storm: February 7th 2018 in situ and remote observations from Juno

Thanks to its unique polar orbit around Jupiter, Juno offered us the first complete views of the aurora at Jupiter. By doing so, the spacecraft allowed us to track some of the most spectacular auroral events, the dawn storms, from their initiation to their decay. Its prowess does not stop there: on February 7th 2018, Juno flew right through the magnetic field lines connected to a dawn storm at a distance of 5 Jovian radii.
The JADE and JEDI particle instruments both recorded a sudden increase of the particle fluxes. This increase was also observed with the radiation monitors, indicating that even relativistic particles are involved in these events. This is consistent with the observation of particularly high color ratios in the UV auroral emissions. The intensity of the Alfvén waves also sharply increased at the same time as the particle fluxes increased, probably being the source of the particle acceleration. Moreover, Juno traversed several sources of bKOM radio emissions during this time interval.
Finally, observations of strong and opposite field aligned currents on each side of the dawn storm supports the idea that dawn storms are associated with a current wedge, further strengthening the similitude between dawn storms at Jupiter and substorms at Earth.