galport.Hamiltonian.dthetadt

Hamiltonian.dthetadt(J, theta, t=None)[source]

Find the value of the Hamiltonian

Parameters:

  • J ((N,) numpy array) – The array of actions

  • theta ((N,) numpy array) – The array of angles

  • t (float, optional) – time, by default None

Returns:

dJdt – The array of actions’ time derivative dJ/dt

Return type:

(N,) numpy array