Observations of MeV electrons in Jupiter's innermost radiation belts and polar regions by the Juno radiation monitoring investigation: Perijoves 1 and 3
| Autor: | John E. P. Connerney, Steven Levin, Emily Manor-Chapman, Raffaella Noschese, Troelz Denver, Richard M. Thorne, Mathias Benn, James W. Alexander, Scott Bolton, Heidi N. Becker, Daniel Santos-Costa, Julia Sushkova, Clifford Lee, Alessandro Mura, Alberto Adriani, Andrea Cicchetti, Virgil Adumitroaie, John Leif Jørgensen, Ingrid Daubar |
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| Přispěvatelé: | ITA, USA |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Astrophysics::High Energy Astrophysical Phenomena Astronomy Magnetosphere Electron 01 natural sciences Jupiter symbols.namesake Geophysics Van Allen radiation belt 0103 physical sciences Physics::Space Physics symbols General Earth and Planetary Sciences Radiation monitoring Polar Astrophysics::Earth and Planetary Astrophysics 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics 0105 earth and related environmental sciences |
| Zdroj: | Becker, H N, Santos-Costa, D, Jørgensen, J L, Denver, T, Adriani, A, Mura, A, Connerney, J E P, Bolton, S J, Levin, S M, Thorne, R M, Alexander, J W, Adumitroaie, V, Manor-Chapman, E A, Daubar, I J, Lee, C, Benn, M, Sushkova, J, Cicchetti, A & Noschese, R 2017, ' Observations of MeV electrons in Jupiter's innermost radiation belts and polar regions by the Juno radiation monitoring investigation: Perijoves 1 and 3 ', Geophysical Research Letters, vol. 44, no. 10, pp. 4481–4488 . https://doi.org/10.1002/2017GL073091 |
| DOI: | 10.1002/2017GL073091 |
| Popis: | Juno's "Perijove 1" (27 August 2016) and "Perijove 3" (11 December 2016) flybys through the innermost region of Jupiter's magnetosphere (radial distances J at closest approach) provided the first in situ look at this region's radiation environment. Juno's Radiation Monitoring Investigation collected particle counts and noise signatures from penetrating high-energy particle impacts in images acquired by the Stellar Reference Unit and Advanced Stellar Compass star trackers, and the Jupiter Infrared Auroral Mapper infrared imager. This coordinated observation campaign sampled radiation at the inner edges of the high-latitude lobes of the synchrotron emission region and more distant environments. Inferred omnidirectional >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. |
| Databáze: | OpenAIRE |
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