propagation_matrixAddFaraday

Workspace.propagation_matrixAddFaraday(self, propagation_matrix: pyarts3.arts.PropmatVector | None = None, propagation_matrix_jacobian: pyarts3.arts.PropmatMatrix | None = None, frequency_grid: pyarts3.arts.AscendingGrid | None = None, select_species: pyarts3.arts.SpeciesEnum | None = None, jacobian_targets: pyarts3.arts.JacobianTargets | None = None, atmospheric_point: pyarts3.arts.AtmPoint | None = None, ray_path_point: pyarts3.arts.PropagationPathPoint | None = None) → None

Calculates absorption matrix describing Faraday rotation.

Faraday rotation is a change of polarization state of an electromagnetic wave propagating through charged matter by interaction with a magnetic field. Hence, this method requires that the magnetic field is non-zero and that the electron density is held by atmospheric_point (SpeciesEnum : free_electrons).

Faraday rotation affects Stokes parameters 2 and 3 (but not intensity!).

Like all propagation_matrix-modifying methods, the method is additive, i.e., does not overwrite the propagation matrix propagation_matrix, but adds further contributions.

Author: Patrick Eriksson

Parameters:

• propagation_matrix (PropmatVector, optional) – This contains the fully polarized propagation matrix for the current path point. See propagation_matrix, defaults to self.propagation_matrix [INOUT]

• propagation_matrix_jacobian (PropmatMatrix, optional) – Partial derivative of the propagation_matrix with regards to jacobian_targets. See propagation_matrix_jacobian, defaults to self.propagation_matrix_jacobian [INOUT]

• frequency_grid (AscendingGrid, optional) – A single frequency grid. See frequency_grid, defaults to self.frequency_grid [IN]

• select_species (SpeciesEnum, optional) – Species selection. See select_species, defaults to self.select_species [IN]

• jacobian_targets (JacobianTargets, optional) – A list of targets for the Jacobian Matrix calculations. See jacobian_targets, defaults to self.jacobian_targets [IN]

• atmospheric_point (AtmPoint, optional) – An atmospheric point in ARTS. See atmospheric_point, defaults to self.atmospheric_point [IN]

• ray_path_point (PropagationPathPoint, optional) – A single path point. See ray_path_point, defaults to self.ray_path_point [IN]