New answers tagged galactic-dynamics
2
votes
How is the potential-density pair relation derived?
Poisson's law is ultimately based on Newton's hypothesis for a law of universal gravitation. Mathematically, the acceleration $\vec{g}(\vec{r})$ caused by some distribution of mass, characterised by a ...
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4
votes
How is the potential-density pair relation derived?
This is Poisson's equation and it derives from Gauss's law:
Since the gravitational field has zero curl (equivalently, gravity is a conservative force) as mentioned above, it can be written as the ...
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