Click on the link "AUDIO" (a plot of intensity vs. frequency vs. time) to hear the whooshing, crackling, popping sounds that emerged from his telescope's loudspeaker:
Audio
"Listen to the recording in
stereo," advises Ashcraft. "I recorded
the audio from two separate radios at 21.1 MHz and
20.9 MHz, so there is a stereo spatial effect from
the frequency drift of the emissions."
Jupiter's radio storms are caused
by natural radio lasers in the planet's magnetosphere
that sweep past Earth as Jupiter rotates. Electrical
currents flowing between Jupiter's upper atmosphere
and the volcanic moon Io can boost these emissions
to power levels easily detected by ham radio antennas
on Earth. Jovian "S-bursts" and "L-bursts"
mimic the sounds of woodpeckers, whales, and waves
crashing on the beach.
Now is a good time to listen to Jupiter's
radio storms. The distance between Earth and Jupiter
is decreasing as the giant planet approches opposition
on Dec. 3rd; the closer Jupiter gets, the louder
it gets. NASA's
Radio Jove Project explains how to build your
own receiver.
source
SILENT OBSERVER:
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