bilby.gw.conversion.bilby_to_lalsimulation_spins

bilby.gw.conversion.bilby_to_lalsimulation_spins(theta_jn, phi_jl, tilt_1, tilt_2, phi_12, a_1, a_2, mass_1, mass_2, reference_frequency, phase)

Convert from Bilby spin parameters to lalsimulation ones.

All parameters are defined at the reference frequency and in SI units.

Parameters:

theta_jn: float

Inclination angle

phi_jl: float

Spin phase angle

tilt_1: float

Primary object tilt

tilt_2: float

Secondary object tilt

phi_12: float

Relative spin azimuthal angle

a_1: float

Primary dimensionless spin magnitude

a_2: float

Secondary dimensionless spin magnitude

mass_1: float

Primary mass in SI units

mass_2: float

Secondary mass in SI units

reference_frequency: float

phase: float

Orbital phase

Returns:

iota: float

Transformed inclination

spin_1x, spin_1y, spin_1z, spin_2x, spin_2y, spin_2z: float

Cartesian spin components