SETI public: Fw: Jovian radio bursts?

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----- Original Message -----
From: Thomas Ashcraft
Sent: Monday, June 23, 2003 9:29 AM
To: bioastro list
Subject: SETI bioastro: Jovian radio bursts?

June 23, 2003

Does anyone know if decametric radio emissions from the Jupiter system (
specifically short bursts or so-called S-bursts ) have ever been analyzed
for possible pattern, sentience, or signal?

Thomas Ashcraft
72632.1427_at_compuserve.com
__________________________________

I think we can safely rule that out -- S-bursts have been studied in very
great detail for half a century, and while the precise details of their
formation processes aren't completely understood (there are at least two
theories), they are definitely associated with Io's natural "flux tube" of
high-powered electrical current arcing between Io and Jupiter's polar
regions -- which explains why their timing, like that of the "L-bursts", is
largely correlated with Io's orbital position in Jupiter's magnetosphere
(since Jupiter's magnetic field axis, and thus the structure of its
magnetosphere, is mildly tilted relative to Io's orbit). Indeed, they seem
to come largely from the regions of the flux tube a few thousand km above
Jupiter's auroras.

There's quite a lot on them (and Jupiter's general decametric radio bursts)
available on Googol; the single best piece I've found is Bhardwaj and
Michael's paper "Io-Jupiter System: A Unique Case of Moon-Planet
Interaction", which was delivered at an ESA conference in June 2002 and can
be found at http://arxiv.org/ftp/astro-ph/papers/0209/0209070.pdf .

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