Restricted three body problem

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In summary, the conversation discusses the restricted three body problem, which involves the motion of a third body with negligible mass. The manifold of interest is M', which represents the set of all possible movements by the third body. The symplectic manifold in this case is the cotangent bundle of M or M', and the exterior 2-form is the structure. It is questioned whether considering just the orbital elements of the third body would affect the symplectic form. It is also mentioned that Lagrange equation is a Hamiltonian system with specific variables, and it is asked if this formulation follows Liouville's theorem.
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baxter
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Hi

Let's consider the three body problem.
The motion of all bodies is a manifold of dim 18. But I will consider that the mass of the third body is neglictible and I am interested in the motion of the third body (in the case, this is the restricted three body problem (non necessary planar nor circular)).

0) What is the new manifold that we have to consider ? Does the set of all the movement possible by the third body is a manifold = M'?

1) When we talk about the symplectic manifold, what is it in this case ? Is it the cotangent bundle of M or M' or an other manifold?
What is the exterior 2-form of the structure ?

2) We considered M as the set of position and velocities, does it change something (in particular with the symplectic form) if we consider just the orbital elements of the third body ?

3) It is proved that Lagrange equation is a Hamiltonian system with a,e,i,RA (right ascension), w (argument of periapsis), M (mean anomalie). Is the the action-angles formulation proposed by Liouville's theorem ?

Thanks for your help :)
 
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I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?
 

1. What is the "restricted three body problem"?

The restricted three body problem is a mathematical problem in celestial mechanics that involves the movement of three celestial bodies in a system, such as a planet, moon, and star. It is called "restricted" because it simplifies the problem by assuming that one of the bodies is much smaller than the other two, and that their movements are only influenced by gravitational forces.

2. How is the "restricted three body problem" different from the "three body problem"?

The three body problem involves calculating the movements of three celestial bodies without any simplifying assumptions, making it a much more complex problem. The restricted three body problem is a simplified version that considers one of the bodies to be relatively small and their movements to be only influenced by gravity, making it easier to solve.

3. What is the significance of the "restricted three body problem" in astrophysics?

The restricted three body problem is significant in astrophysics because it helps us understand the complex interactions and movements of celestial bodies in a system. It has applications in predicting the movements of planets, moons, and other celestial objects, as well as in spacecraft navigation and orbital mechanics.

4. Can the "restricted three body problem" be solved analytically?

No, the restricted three body problem cannot be solved analytically. This means that there is no exact, closed-form solution to the problem. Instead, it can only be solved numerically using computer simulations and mathematical techniques.

5. Are there any real-world examples of the "restricted three body problem"?

Yes, there are several real-world examples of the restricted three body problem, such as the interactions between the Earth, Moon, and Sun in our solar system, or the interactions between Jupiter, its moons, and the Sun. It also applies to the movements of binary star systems and other celestial bodies in a three-body system.

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