All Questions
Tagged with gravity simulations
33
questions
0
votes
0
answers
28
views
Better equations for modeling and simulating a halo orbit?
I'm trying to model a halo orbit at low altitude (10m from surface). The satellite is using propulsion to trace the circular halo path. It looks like this "from the top" (the blue ball is ...
- 231
0
votes
0
answers
40
views
Topological illustration of spacetime dilation: which function should I use for isometric lines spacing?
Scientific popularization, when it comes to illustrating spacetime dilation around massive objects, often relies on the description of a two-dimensional square-grid, which can be regarded as a cross-...
0
votes
0
answers
29
views
How to create a more accurate gravity simulation? [duplicate]
Goal:
I am interested creating a simple gravity simulation and was wondering if it was possible to describe two objects motions through time with percision. All other parameters are known (...
0
votes
2
answers
94
views
How to simulate the gravity of a bunch of planets on an object?
I'm trying to simulate an object, like a ship, floating around planets. all i can find about anything like this online is the N-body problem, but I'm not trying to simulate the effects of the planets ...
0
votes
0
answers
60
views
What is the Correction Function in Poisson's Equation for MOND?
I am looking to do a celestial simulation using MOND for the final project of my intermediate mechanics course. From the Wikipedia page, it seems that preserving Newton's Third Law requires deriving a ...
- 31
0
votes
1
answer
162
views
Circular velocity vector on the surface of spherical potential (gravity)
So, I would like to integrate paths of particles on circular velocity on the surface of a sphere (due to some potential, i.e. gravity).
The problem is to fix the two angular velocities $\dot \theta $ ...
- 1
1
vote
1
answer
552
views
How can the orbital motion of planets around the sun be calculated taking into account the force exerted by other planets?
In The Feynman Lectures on Physics (Vol. 1, Chapter 9), Feynman explained how to calculate the planetary motion by just using the Newton's laws of motion and the Euler's method as a numerical solution ...
- 87
1
vote
1
answer
46
views
Triagulations of 4D Euclidean Lattice
I am interested in Euclidean gravity models such as Regge's simplicial gravity model. These models use triangulations of $\mathbb{R}^4$ with periodic boundary conditions. While there are many papers ...
- 19
2
votes
2
answers
925
views
How to interpret line of sight velocity distributions and dispersions of a galaxy?
What I did: I am analysing some simulation snapshots of the Milky Way and it is modelled as a DM halo – bulge – disc system. I produced some mean line of sight velocity (LOSV) and dispersion of mean ...
- 63
0
votes
1
answer
43
views
Height oscillations in orbit induced from lunar gravity
I am trying to numerically solve the orbit of a space probe around the moon in a non-spherical gravitational field .
$
\Large
\begin{align}
\frac{d^{2} x}{dt^2} = - \frac{G M x}{(x^2 + y^2)^{3/2}}
- \...
- 161
1
vote
1
answer
111
views
Accounting for expansion in $N$-Body gravitational simulations
I have an $N$-Body simulation for the evolution of the universe. It uses a hybrid Tree Particle-Mesh scheme to compute the forces. The tree code used Newtons law of gravity:
$$\textbf{F}_i = -G \sum_{...
- 13
-2
votes
1
answer
60
views
Is it possible to compress 2 objects with a ring of black holes? [closed]
Context:
Let's say you are typical type M star and have nothing orbiting you (no planets, I think its called binary stars?).
Now such a massive and hot object is on its own breathtaking but here ...
4
votes
1
answer
154
views
Is it possible to derive curvature of spacetime from EFEs to create a computer simulation of the solar system? [duplicate]
Background
I am a professional scientist (biologist), statistician and a computer programmer, but an amateur physicist so pardon me if this question appears silly. In order to understand general ...
- 143
1
vote
0
answers
66
views
Calculating acceleration due to gravity using General Relativity [duplicate]
A few months ago I wrote a program which simulates how user-defined bodies moved under each other's gravities using Newton's Law of Gravitation. For each body, I calculated the total acceleration from ...
- 572
0
votes
0
answers
115
views
Calculating trajectory of ballistic spacecraft
I have a scenario of a spacecraft departing from the far side of Mars (from Earth) at a particular date arriving at Earth at a particular date, without acceleration after launch I would like to know ...
- 763