separatrix

kerrgeopy.constants.separatrix(a, e, x)

Returns the value of p at the separatrix for the given orbital parameters computed using the bracked root finding method described in Stein and Warburton

Parameters:

• a (double) – dimensionless spin of the black hole (must satisfy 0 <= a < 1)

• e (double) – orbital eccentricity (must satisfy 0 <= e <= 1)

• x (double) – cosine of the orbital inclination (must satisfy 0 <= x^2 <= 1)

Return type:

double