pyseobnr.eob.dynamics.initial_conditions_aligned_ecc_opt.compute_roots_cons

pyseobnr.eob.dynamics.initial_conditions_aligned_ecc_opt.compute_roots_cons(r0_guess: float, pphi0_guess: float, pr_star: float, dot_prstar: float, m_1: float, m_2: float, chi_1: float, chi_2: float, omega_inst: float, eccentricity: float, rel_anomaly: float, H: Hamiltonian, params: EOBParams) → tuple[float, float][source]

Wrapper for the computation of the roots for the conservative equations.

Parameters:

  • r0_guess (float) – Value of the starting separation based on PN

  • pphi0_guess (float) – Value of the starting angular momentum based on PN

  • pr_star (float) – Radial momentum in tortoise coordinates

  • dot_prstar (float) – Time derivative of the radial momentum in tortoise coordinates

  • 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

  • omega_inst (float) – Initial instantaneous orbital frequency in geometric units

  • eccentricity (float) – Desired initial eccentricity

  • rel_anomaly (float) – Desired relativistic anomaly

  • H (Hamiltonian) – The Hamiltonian object to use

  • params (EOBParams) – EOB parameters of the system

Returns:

The initial conditions: (r, pphi)

Return type:

tuple