plunging_radial_roots

kerrgeopy.constants.plunging_radial_roots(a, E, L, Q)

Computes the radial roots for a plunging orbit. If all roots are real, roots are sorted such that the motion is between r1 and r2 and roots are otherwise in decreasing order. If there are two complex roots, r1 < r2 are real and r3/r4 are complex conjugates.

Parameters:

• a (double) – dimensionless spin parameter

• E (double) – dimensionless energy

• L (double) – dimensionless angular momentum

• Q (double) – dimensionless Carter constant

Returns:

tuple of radial roots

Return type:

tuple(double,double,double,double)