spectral_propmatAddFaraday

Workspace.spectral_propmatAddFaraday(self, spectral_propmat: PropmatVector = self.spectral_propmat, spectral_propmat_jac: PropmatMatrix = self.spectral_propmat_jac, freq_grid: AscendingGrid = self.freq_grid, select_species: SpeciesEnum = self.select_species, jac_targets: JacobianTargets = self.jac_targets, atm_point: AtmPoint = self.atm_point, ray_point: PropagationPathPoint = self.ray_point) → 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 atm_point (SpeciesEnum : free_electrons).

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

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

Author: Patrick Eriksson

Parameters:

  • spectral_propmat (~pyarts3.arts.PropmatVector, optional) – This contains the fully polarized propagation matrix for the current path point. Defaults to self.spectral_propmat. [INOUT]

  • spectral_propmat_jac (~pyarts3.arts.PropmatMatrix, optional) – Partial derivative of the spectral_propmat with regards to jac_targets. Defaults to self.spectral_propmat_jac. [INOUT]

  • freq_grid (~pyarts3.arts.AscendingGrid, optional) – A frequency grid. Unit: Hz. Defaults to self.freq_grid. [IN]

  • select_species (~pyarts3.arts.SpeciesEnum, optional) – Species selection. Defaults to self.select_species. [IN]

  • jac_targets (~pyarts3.arts.JacobianTargets, optional) – A list of targets for the Jacobian Matrix calculations. Defaults to self.jac_targets. [IN]

  • atm_point (~pyarts3.arts.AtmPoint, optional) – An atmospheric point in ARTS. Defaults to self.atm_point. [IN]

  • ray_point (~pyarts3.arts.PropagationPathPoint, optional) – A single path point. Defaults to self.ray_point. [IN]