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- Title
In situ evidence of the magnetospheric cusp of Jupiter from Juno spacecraft measurements.
- Authors
Xu, Y.; Arridge, C. S.; Yao, Z. H.; Zhang, B.; Ray, L. C.; Badman, S. V.; Dunn, W. R.; Ebert, R. W.; Chen, J. J.; Allegrini, F.; Kurth, W. S.; Qin, T. S.; Connerney, J. E. P.; McComas, D. J.; Bolton, S. J.; Wei, Y.
- Abstract
The magnetospheric cusp connects the planetary magnetic field to interplanetary space, offering opportunities for charged particles to precipitate to or escape from the planet. Terrestrial cusps are typically found near noon local time, but the characteristics of the Jovian cusp are unknown. Here we show direct evidence of Jovian cusps using datasets from multiple instruments onboard Juno spacecraft. We find that the cusps of Jupiter are in the dusk sector, which is contradicting Earth-based predictions of a near-noon location. Nevertheless, the characteristics of charged particles in the Jovian cusps resemble terrestrial and Saturnian cusps, implying similar cusp microphysics exist across different planets. These results demonstrate that while the basic physical processes may operate similarly to those at Earth, Jupiter's rapid rotation and its location in the heliosphere can dramatically change the configuration of the cusp. This work provides useful insights into the fundamental consequences of star-planet interactions, highlighting how planetary environments and rotational dynamics influence magnetospheric structures. Jovian cusps are not well-known due to limited observations. Here, the authors show that the characteristics of charged particles in the Jovian cusps are similar to those of the Earth and Saturn cusps, and Jupiter's polar cusp is located in the dusk-side sector, contradicting Earth-based predictions of a near-noon location.
- Subjects
JUNO (Space probe); INTERPLANETARY magnetic fields; JUPITER (Planet); LEGAL evidence; ROTATION of the earth; HELIOSPHERE
- Publication
Nature Communications, 2024, Vol 15, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-024-50449-z