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B-mode plots, spherical harmonics?, fundamental modes?

  1. Mar 20, 2014 #1
    If the B-mode sky plots could be Fourier transformed what would be a plot of the lowest order B-mode harmonic plotted on a sphere look like?

    I guess we need two functions of spherical coordinates, one function for amplitude at points on a sphere and one function for the orientation at the same points on a sphere?

    Is there a hypothetical "gravitational wave" that gives rise to this lowest order harmonic?

    Thanks for any help!
    Last edited: Mar 20, 2014
  2. jcsd
  3. Mar 20, 2014 #2
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