Click for sound of jovian S-bursts


The So-Called Wild Electromagnetic Surf from Jupiter and Io


Jovian radio emissions have been studied intensively since their discovery in the mid-1950s but the origin and mechanisms of emission
are still not fully explained and remain to a large degree a mystery. The primary thing that is known is that there are three regions on
Jupiter that emit radio bursts at decametric frequencies. These regions are known to science as the "A", "B", and "C" regions. When
the jovian moon Io orbits over one of these regions then bursts can happen and these bursts exhibit specific sorts of properties.
Jupiter acts in essence like a rotating beacon of energy and these periodic bursts beam out into space and sweep over the Earth
when the Jupiter-Earth alignments are right.      The bursts can be quite strong.

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 Following are some jovian sound specimens that we captured using a stereo radio telescope with about 300 kHz between right and left channels.
This gives a true three-dimensional feeling of the wave forms as they move spatially in time and frequency.  Sometimes it can make for an interesting experience.

Headphones are strongly encouraged for hearing subtle stereo detail.

Stereo S-bursts recorded about 300 kHz apart in frequency.    File size 2.7 MB
Stereo S-Bursts

Rapid burst sequence showing drift from 22 MHz (right channel) to 21 MHz (left channel).   File Size:   792 KB
Jupiter bursts 22 MHz right 21 MHz left

Stereo L-Bursting recorded during an Io-B storm.    File Size : 1.1 MB
Jovian L-Bursts in stereo

Excerpt of another Io-B storm captured in stereo at 23 MHz and 22 MHz.   File Size : 3.8 MB
Jovian Io-B storm at dual frequencies

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Jupiter Spectrographs and Sound Files for Advanced Study

Spectrograph Introduction Page



Hardware and Circuitry

For the Sun and Jupiter

Radios : 7 Sangean ATS-803a short waves with automatic gain control disabled
Array of yagis and half wave dipole antennas cut for exact monitoring frequencies
Spectrogram Version 11.0 for spectrographs
Audio recording : Panasonic VHS recorders


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Thomas Ashcraft
35.50  N  Latitude   105.88  W  Longitude
New Mexico


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