Symbol | Description |
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Polarization angle (N through E) |
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Polarization angle at
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Frequency |
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Channel width in frequency |
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Central frequency of a channel |
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Wavelength |
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Wavelength to which all polarization vectors are derotated |
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Central wavelength squared of a channel |
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Channel width in wavelength squared |
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Total bandwidth in wavelength squared.
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Faraday depth |
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FWHM of the main peak of the RMTF |
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Rotation measure |
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Weight function |
wi | Weight of the ith data point |
K | One over the integral of W or one over the sum of weights |
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Faraday dispersion function without spectral dependence |
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Reconstructed approximation to ![]() |
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General form of the Faraday dispersion function |
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Spectral dependence in I, normalized to unity at
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Frequency spectral index |
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Complex polarized surface brightness |
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Observed P:
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Complex polarization fraction
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Rotation Measure Transfer Function (RMTF) |
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Magnetic induction |
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Position vector |
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Thermal electron density |
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Spectral index of the relativistic electron energy distribution |
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Real part of z |
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Imaginary part of z |
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Merit function for traditional linear least squares fitting of rotation measures. Defined in Eq. (49) |
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rms noise in a single channel map |
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rms noise in single Q or U channel maps |
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Standard error
of ![]() ![]() |
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Standard error in Faraday depth
and position angle at ![]() |
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Standard deviation of the distribution of
![]() This is a measure of the effective width of the ![]() |
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Dirac delta function |