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Gravity field representation (Read 2403 times)
frankuitaalst
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Gravity field representation
02/17/08 at 22:53:58
 
Wondering how the gravity field of our solar system looks like ?  
The picture hereunder represents the gravity potential of the 2 major bodies of our solar system  : Sun and Jupiter .  
Instead of using isogravity lines , colors were used to indicate the gravity potential .  
Strong potential is represented by red , weak potential by green . The intermediate colors (mixture of red and green ) were calculated by interpolation.  
The potential representation is not done linearly , as due to the hughe field of the sun the picture would appear  as a red circle around the sun , immediately surrounded by a green plane . Instead a smoothtening function of power 10 was used in order to be able to represent the intermediate values .  
Earth is also represented in this picture , but it isn't visible due to the overwhelming field of the sun.  
The values represent the potential in Joule  1 kg of matter has.    
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GravityfieldSunJup.JPG
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EDG
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Re: Gravity field representation
Reply #1 - 02/19/08 at 20:33:44
 
Nifty! What are the white dots near the sun though? There's too many to be the inner planets.
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(formerly known as Mal)
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frankuitaalst
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Re: Gravity field representation
Reply #2 - 02/19/08 at 22:40:46
 
I used a program which colors each pixel in the screen with the appropriate color . I think a couple of pixels are bad on my screen and are not colored . No planets .
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Re: Gravity field representation
Reply #3 - 02/20/08 at 00:41:57
 
I wonder if it's possible to find some way of doing something like this to show the Lagrange points, or the potential in the system.
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frankuitaalst
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Re: Gravity field representation
Reply #4 - 02/20/08 at 10:08:13
 
Smiley Yeah , thats the reason why I tried this representation. I'll try to modify the snsitivity to show this area , but I'm afraid the variation of the field is to small to get it on the screen properly .
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frankuitaalst
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Re: Gravity field representation
Reply #5 - 02/20/08 at 10:45:17
 
Herunder is the screenshot of the Sun-Jupiter potential in a higher sensitivity than above.  
As expected the Lagrange point L4 and L5 don't come out in this picture as the variation is to small.  
I guess the only method to represent this is to draw isopotential lines around them .
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GravpotsunJup2.JPG
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frankuitaalst
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Re: Gravity field representation
Reply #6 - 02/24/08 at 04:51:48
 
A nice representation of the L4 and L5 can be found on the good old wikipedia :  
http://en.wikipedia.org/wiki/Lagrangian_point
I guess this plot was created with an exagerated M2 to M1 ratio , as I don't get any resolution of the L4 and L5 point with present mass ratio's .  
Picture herunder gives of the potiential field in case of a Jupiter planet of 0.1 solar masses .  
Picture was created with Surf3D software ( freeware ) . Also in this picture the L4 and L5 points don't resolve .
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Pot01.JPG
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