stable_radial_roots#

kerrgeopy.constants.stable_radial_roots(a, p, e, x, constants=None)[source]#

Computes the radial roots for a stable bound orbit as defined in equation 10 of Fujita and Hikida. Roots are given in decreasing order.

Parameters:

  • a (double) – dimensionless spin of the black hole

  • p (double) – orbital semi-latus rectum

  • e (double) – orbital eccentricity

  • x (tuple(double, double, double, double)) – cosine of the orbital inclination

  • constants (tuple(double, double, double)) – dimensionless constants of motion for the orbit

Returns:

tuple containing the four roots of the radial equation

Return type:

tuple(double, double, double, double)