CMB polarization data plots, almost a vector field, then what?

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The polarization of the Cosmic Microwave Background (CMB) is characterized by varying magnitudes and orientations between 0° and 180°, leading to questions about its classification as a mathematical field. Participants discuss the mathematical representation of this polarization, referencing Stokes parameters for clarity. There is curiosity about the significance of red and blue colors in the data plots, prompting inquiries into whether they indicate temperature fluctuations. The conversation highlights the complexity of interpreting CMB polarization data and its implications for understanding cosmic phenomena. Overall, the discussion emphasizes the need for deeper insights into the mathematical and physical interpretations of CMB polarization.
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The data points of the polarization of the CMB are a magnitude and an orientation that varies between 0° and 180°. What kind of mathematical field is that, not quite a vector field?

Thanks for any help!
 
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Spinnor said:
The data points of the polarization of the CMB are a magnitude and an orientation that varies between 0° and 180°. What kind of mathematical field is that, not quite a vector field?

Thanks for any help!
This is how polarization on the sky is often defined mathematically:
http://en.wikipedia.org/wiki/Stokes_parameters
 
And what are the red and blue colors in the plots?
 
bcrowell said:
And what are the red and blue colors in the plots?

Temperature fluctuations?
 

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