pyseobnr.eob.dynamics.initial_conditions_aligned_ecc_opt.IC_diss_ecc

pyseobnr.eob.dynamics.initial_conditions_aligned_ecc_opt.IC_diss_ecc(u: float | np.ndarray, r: float, pphi: float, dot_r_cons: float, dot_r_diss_ecc: float, m_1: float, m_2: float, chi_1: float, chi_2: float, eccentricity: float, rel_anomaly: float, H: Hamiltonian, RR: RadiationReactionForceEcc, params: EOBParams)[source]

Equations defining the “dissipative” part of the initial conditions. See Eq. (116) in [Gamboa2024a] .

Parameters:

  • u (float, np.ndarray) – Guess for pr

  • r (float) – Starting separation

  • pphi (float) – Starting angular momentum

  • dot_r_cons (float) – Time derivative of r computed with the conservative dynamics

  • dot_r_diss_ecc (float) – Time derivative of r computed with post-adiabatic corrections

  • m_1 (float) – Mass of the primary

  • m_2 (float) – Mass of the secondary

  • chi_1 (float) – z-component of the dimensionless spin vector of the primary

  • chi_2 (float) – z-component of the dimensionless spin vector of the secondary

  • eccentricity (float) – Desired initial eccentricity

  • rel_anomaly (float) – Desired relativistic anomaly

  • H (Hamiltonian) – The Hamiltonian to use (an instance of Hamiltonian class)

  • RR (RadiationReactionForceEcc) – Function that returns the RR force with eccentric corrections

  • params (EOBParams) – EOB parameters of the system

Returns:

The desired equations evaluated at u

Return type:

[float]