galpy.orbit.Orbit.jr

Orbit.jr(pot=None, **kwargs)[source]

Calculate the radial action.

Parameters:
  • pot (Potential or list of Potential instances, optional) – Gravitational potential. Default is the gravitational field used for the orbit integration.

  • type ({'staeckel', 'adiabatic', 'isochroneApprox', 'spherical'}, optional) – Type of actionAngle module to use. Default is ‘staeckel’.

  • ro (float or Quantity, optional) – Physical scale in kpc for distances to use to convert. Default is object-wide default.

  • vo (float or Quantity, optional) – Physical scale in km/s for velocities to use to convert. Default is object-wide default.

  • use_physical (bool, optional) – Use to override object-wide default for using a physical scale for output.

  • quantity (bool, optional) – If True, return an Astropy Quantity object. Default from configuration file.

Returns:

Radial action.

Return type:

float, numpy.ndarray or Quantity [*input_shape]

Notes

  • Keyword arguments also include the actionAngle module setup kwargs for the corresponding actionAngle modules

  • 2019-02-27 - Written - Bovy (UofT)