X6.2 Solar Flare : Shockfront and Radio Sweep
September 9, 2005
Recording excerpt 1939:17 UT to 1941:07
Here is a one minute forty nine second audio recording of the flare's
and radio sweep recorded with a stereo radiotelescope at the frequencies
of 22.222 MHz and 21.468 MHz.
If you listen close you can hear the burst hit on one stereo channel then
hit the other channel as the emission sweeps
down from higher to lower frequency. The velocity of this eruption was 959
kilometers per second.
Headphones strongly recommended for full stereo spatial effect. And
it is best played at moderate to loud volume.
The strongest peak comes at about 1 minute 20 seconds into soundfile.
Click below for specimen.
1.6 Mb 1 minute 49 seconds
Movies and visual record of event at
Extensive information on Type II radio bursts at http://www.atnf.csiro.au/pasa/17_1/cairns/paper/node5.html
For more recordings
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