Series Expansion Newton Dark Matter

AI Thread Summary
The discussion centers on the need for a series expansion of Newton's law to explain discrepancies in star rotation around galaxies, which contradicts Newtonian predictions. The user seeks reliable experimental data and acknowledges the complexity of the topic, moving away from a simplistic interpretation like MOND. They express a desire for measured values and uncertainties related to dark matter observations. Ultimately, the user realizes that the geometry of galaxies complicates the application of a straightforward 1/r^2 rule. The thread concludes with the user finding additional material and wishing to retract their initial request.
jensel
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Hi,

I hope you can help me. I am a physicist but not a researcher and have currently not the time to study many papers about the subject of dark matter. What I would need for deeper thoughts is an expansion in a series of the Newton law for cases where it has been measured that star rotation around a galaxy is in contrast to Newton.

Meaning: There should be something like

F ≈ 1/r^2 + a/r^3 + ...

I understand fully that the answer can't be that simple but please provide me with some information about the measured values and the uncertaincy in those measurements. Thanks a lot in advance.


Jens

PS, I edit this post: It ist not that I want to push a simple MOND hypothesis, I need reliable experimental data. Thanks a lot.
 
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I would like to remove this thread. I did not see the geometry of the galaxies. It is something not to be described in such an easy way. A 1/r^2 rule is only given for a point like mass center. I found out some material, sorry.
 

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