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Old 30-June-2005, 07:34 AM
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Enzp Enzp is offline
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Default Planetary radio emissions

In the ATM section I was discussing radio brightness of things. And I realize my ignorance of it. I am aware that Jupiter emits radio frequency energy. I am wondering what the relative strength of those emissions are? How bright is the signal in radio bands?

My purpose is to determine how far away we could detect such emissions, another way to detect planets. My secondary purpose was to compare the radio brightnes of Jupiter with the radio brightness of Earth as a result of our man-made radio transmissions. That is, which would be brighter at large distance?

My search here turned up nothing, but if I missed it, please direct me.

Thank you.
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Old 30-June-2005, 09:06 AM
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01101001 01101001 is offline
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Default Re: Planetary radio emissions

It doesn't have the info you seek, but might provide pointers in the direction. It's a new NASA page celebrating the 50th anniversary of Jupiter-radio reception.

How One Night in a Field Changed Astronomy

Quote:
Fifty years ago, scientists Bernard Burke and Kenneth Franklin mistook radio signals from Jupiter for a Maryland farmhand driving home after a late date.

It was an easy mistake to make back in 1955 as they set out to map the northern sky using a radio astronomy array in the middle of a rural 96-acre field about 20 miles northwest of Washington, D.C. Before that fateful night, astronomers had never picked up radio signals from any other planet besides Earth.
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Old 01-July-2005, 03:50 AM
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Thanks
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Old 03-July-2005, 05:07 PM
Luna2uno Luna2uno is offline
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Default Re: Planetary radio emissions

Quote:
Originally Posted by 01101001
It doesn't have the info you seek, but might provide pointers in the direction. It's a new NASA page celebrating the 50th anniversary of Jupiter-radio reception.

How One Night in a Field Changed Astronomy

Quote:
Fifty years ago, scientists Bernard Burke and Kenneth Franklin mistook radio signals from Jupiter for a Maryland farmhand driving home after a late date.

It was an easy mistake to make back in 1955 as they set out to map the northern sky using a radio astronomy array in the middle of a rural 96-acre field about 20 miles northwest of Washington, D.C. Before that fateful night, astronomers had never picked up radio signals from any other planet besides Earth.
Thanks 01 for that great page. The picture of Jupiter in motion shows the (jet stream?) atmosphere moving in fast bands around the planet, not unlike how the Sun's surface moves in bands, fastest near the equator. What is most puzzling, if this moving picture of Jupiter is right, is the giant red spot, which seems almost stationary against the background of the fast moving upper atmosphere. Shouldn't it move with the planet's spin? Could it be somehow related to the radio emissions from Jupiter, which also has very strong magnetic field and radiation? If the red spot is a fast moving storm, what anchors it? Could the interior of this gas giant, perhaps some sort of solid core, be aligned with the red spot? Can radio map show this? I'm afraid I have too many questions!

Very keen stuff! =D>
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Old 03-July-2005, 05:57 PM
Karl Karl is offline
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Actually, a significant breakthrough was made using Chandra observations recently regarding the strength of the Jovian aurora.

http://www.sciencedaily.com/releases...0309125435.htm
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