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Subject Saturn's Electric Link With Enceladus (Cassini) - Updated with Vid

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[quote:Anonymous Coward 1333977:MV8xNDU3ODEwX0M3QkJFRDA=]
[b][i]April 20, 2011[/b]

PASADENA, Calif. -- [b]NASA is releasing the first images and sounds of an electrical connection between Saturn and one of its moons, Enceladus.[/b]

:saturnlink:

[b]Scientists previously theorized an electrical circuit should exist at Saturn. After analyzing data that Cassini collected in 2008, scientists saw a glowing patch of ultraviolet light emissions near Saturn's north pole that marked the presence of a circuit, even though the moon is 240,000 kilometers (150,000 miles) away from the planet.[/b]

The patch occurs at the end of a magnetic field line connecting Saturn and its moon Enceladus. The area, known as an auroral footprint, is the spot where energetic electrons dive into the planet's atmosphere, following magnetic field lines that arc between the planet's north and south polar regions.

:saturnlink2:

[b]In 2008, Cassini detected a beam of energetic protons near Enceladus aligned with the magnetic field and field-aligned electron beams.[/b] A team of scientists analyzed the data and concluded the electron beams had sufficient energy flux to generate a detectable level of auroral emission at Saturn. A few weeks later, Cassini captured images of an auroral footprint in Saturn's northern hemisphere. [b]In 2009, a group of Cassini scientists led by Donald Gurnett at the University of Iowa in Iowa City, detected more complementary signals near Enceladus consistent with currents that travel from the moon to the top of Saturn's atmosphere, including a hiss-like sound from the magnetic connection.[/b] That paper was published in March in Geophysical Research Letters.
[b]
The water cloud above the Enceladus jets produces a massive, ionized "plasma" cloud through its interactions with the magnetic bubble around Saturn. This cloud disturbs the magnetic field lines.[/b] The footprint appears to flicker in these new data, so the rate at which Enceladus is spewing particles may vary. [/i]
http://www.jpl.nasa.gov/news/news.cfm?release=2011-120&rn=news.xml&rst=2974#1
[glpvideo]http://video.godlikeproductions.com/video/Hiss_from_Aurora_Caused_by_Enceladus?id=4b80fe69fe8e86ecada[/glpvideo]http://video.godlikeproductions.com/video/Hiss_from_Aurora_Caused_by_Enceladus?id=4b80fe69fe8e86ecada
[/quote]

Original Message April 20, 2011

PASADENA, Calif. -- NASA is releasing the first images and sounds of an electrical connection between Saturn and one of its moons, Enceladus.

:saturnlink:

Scientists previously theorized an electrical circuit should exist at Saturn. After analyzing data that Cassini collected in 2008, scientists saw a glowing patch of ultraviolet light emissions near Saturn's north pole that marked the presence of a circuit, even though the moon is 240,000 kilometers (150,000 miles) away from the planet.

The patch occurs at the end of a magnetic field line connecting Saturn and its moon Enceladus. The area, known as an auroral footprint, is the spot where energetic electrons dive into the planet's atmosphere, following magnetic field lines that arc between the planet's north and south polar regions.

:saturnlink2:

In 2008, Cassini detected a beam of energetic protons near Enceladus aligned with the magnetic field and field-aligned electron beams. A team of scientists analyzed the data and concluded the electron beams had sufficient energy flux to generate a detectable level of auroral emission at Saturn. A few weeks later, Cassini captured images of an auroral footprint in Saturn's northern hemisphere. In 2009, a group of Cassini scientists led by Donald Gurnett at the University of Iowa in Iowa City, detected more complementary signals near Enceladus consistent with currents that travel from the moon to the top of Saturn's atmosphere, including a hiss-like sound from the magnetic connection. That paper was published in March in Geophysical Research Letters.

The water cloud above the Enceladus jets produces a massive, ionized "plasma" cloud through its interactions with the magnetic bubble around Saturn. This cloud disturbs the magnetic field lines. The footprint appears to flicker in these new data, so the rate at which Enceladus is spewing particles may vary.
[link to www.jpl.nasa.gov]

[link to video.godlikeproductions.com]

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