pyseobnr.eob.dynamics.initial_conditions_aligned_ecc_opt.compute_root_diss

pyseobnr.eob.dynamics.initial_conditions_aligned_ecc_opt.compute_root_diss(r0: float, pphi0: float, dot_r_cons: float, dot_r_diss_ecc: float, m_1: float, m_2: float, chi_1: float, chi_2: float, omega_avg: float, eccentricity: float, rel_anomaly: float, H: Hamiltonian, RR: RadiationReactionForceEcc, params: EOBParams) float[source]

Compute the initial value of the radial momentum, including dissipative contributions. One can use a PN formula or a resummed formula (default).

Parameters:
  • r0 (float) – Starting separation

  • pphi0 (float) – Starting angular momentum

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

  • dot_r_diss_ecc (float) – Time derivative of r computed using 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

  • omega_avg (float) – Orbit-averaged orbital frequency

  • 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 initial radial momentum in tortoise coordinates

Return type:

[float]