Juno Listens to Jupiter's Auroras
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During Juno's close flyby of Jupiter on August 27, 2016, the Waves instrument received radio signals associated with the giant planet's intense auroras. These are known as "Jovian kilometric emissions" because their wavelengths are roughly a kilometer long. The signals ranging from 7 to 100 kHz have been shifted down into the audio frequency range and compressed in time to fit 13 hours of observation into about 25 seconds. The video presents a frequency-time spectrogram with a moving cursor that shows the time position of the audio track. Time advances from left to right along the horizontal axis, frequency ranges from low to high frequencies along the vertical axes, and the amplitude of the signals is color coded with blue indicating weak signals and red indicating strong signals. View the annotated NASA/JPL video |
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© The University of Iowa
2016. Audio clips freely licensed
under a
Creative Commons Attribution 3.0 Unported License Contact information. Send questions or comments to William Kurth. The Radio and Plasma Wave Group, Department of Physics & Astronomy, College of Liberal Arts & Sciences. |
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