gwpopulation_pipe.utils.chi_p_from_components

chi_p_from_components(a_1, cos_tilt_1, a_2, cos_tilt_2, mass_ratio)[source]

Compute the precession spin parameter from the component spins.

Parameters:

a_1: array-like: The magnitude of the primary spin.
cos_tilt_1: array-like: The cosine of the tilt of the primary spin.
a_2: array-like: The magnitude of the secondary spin.
cos_tilt_2: array-like: The cosine of the tilt of the secondary spin.
mass_ratio: array-like: The mass ratio of the binary.

Returns:

chi_p: array-like: The precession spin parameter.