Observations of MeV electrons in Jupiter's innermost radiation belts and polar regions by the Juno radiation monitoring investigation: Perijoves 1 and 3

• Published in: Geophysical research letters 2017-05, Vol.44 (10), p.4481-4488
• Main Authors: Becker, Heidi N., Santos‐Costa, Daniel, Jørgensen, John L., Denver, Troelz, Adriani, Alberto, Mura, Alessandro, Connerney, John E. P., Bolton, Scott J., Levin, Steven M., Thorne, Richard M., Alexander, James W., Adumitroaie, Virgil, Manor‐Chapman, Emily A., Daubar, Ingrid J., Lee, Clifford, Benn, Mathias, Sushkova, Julia, Cicchetti, Andrea, Noschese, Raffaella
• Format: Article
• Language: English
• Subjects: Bursting; Bursts; Compasses; Constraint modelling; Electron density; Electron flux; Emission; Energy; Environment models; Environmental monitoring; Flyby missions; Image acquisition; Infrared signatures; Infrared tracking; Juno; Jupiter; Jupiter probes; Lobes; Magnetosphere; Magnetospheres; Noise; Noise prediction; Planetary magnetospheres; Polar environments; Polar regions; Radiation; Radiation belts; Radiation measurement; Radiation monitoring; Relativism; Star trackers
• ISSN: 0094-8276; 1944-8007
• DOI: 10.1002/2017GL073091

Juno's “Perijove 1” (27 August 2016) and “Perijove 3” (11 December 2016) flybys through the innermost region of Jupiter's magnetosphere (radial distances 5 MeV and >10 MeV electron fluxes derived from these measurements provide valuable constraints for models of relativistic electron environments in the inner radiation belts. Several intense bursts of high‐energy particle counts were also observed by the Advanced Stellar Compass in polar regions outside the radiation belts. Key Points High‐latitude sampling of relativistic electrons at the inner edge of the Jovian radiation belts is discussed Noise from penetrating radiation is used to detect MeV electrons Enhanced particle counts were observed in Jupiter's polar regions