Publication Date:
2019-07-13
Description:
One of the most intriguing discoveries of Juno is the quasi-systematic detection of upgoing electrons above the auroral regions. Here we discuss a by-product of the most energetic component of this population: a contamination resembling bar codes in the Juno-UVS images. This pattern is likely caused by bursts of 10 MeV electrons penetrating the instrument. These events are mostly detected when Junos magnetic footprint is located poleward of the main emission relative to the magnetic pole. The signal is not periodic, but the bursts are typically 0.11 s apart. They are essentially detected when Juno-UVS is oriented toward Jupiter, indicating that the signal is due to upgoing electrons. The event detections occur between 1 and 7 Jovian radii above the 1-bar level, suggesting that the electron acceleration takes place close to Jupiter and is thus both strong and brief.
Keywords:
Lunar and Planetary Science and Exploration
Type:
GSFC-E-DAA-TN66138
,
Geophysical Research Letters (ISSN 0094-8276) (e-ISSN 1944-8007); 45; 22; 12108-12115
Format:
text
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