calc_fraction

acstools.polarization_tools.calc_fraction(i, q, u, transmission_correction=1)

Method for determining the fractional polarization.

Parameters:

  • i (float) – Stokes I parameter.

  • q (float) – Stokes Q parameter.

  • u (float) – Stokes U parameter.

  • transmission_correction (float (Default = 1)) – Correction factor to account for the leak of photons with non-parallel electric field position angles. See Section 5.3.4 of the ACS Data Handbook.

Returns:

pol_fraction – Polarization fraction.

Return type:

float