1.  Delensing :

1.1  Variance spectrum

muKarcmin0.11.05.0
Bicep
LiB

1.2  Window matrices

Delens0.00.10.20.30.40.5
Bicep, 0.1 muK
LiB, 0.1 muK

2.  Modes mixing :

2.1  Bicep, Window matrices ns 64 Vs ns 128 :

Pixelization effect due to lmax :

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  • bservations :
    • The last bins suffer from the same E/B leakage than for ns128. We conclude this is due to the pixelization effect.

2.2  E to B leakage

Modes

Modes contributions to the BB-spectrum reconstruction, computed from the renormalized modes-mixing matrix \bar F_{\ell\ell'} \equiv F_{\ell\ell'} / \sum_{\ell''} F_{\ell\ell''}. All \ell'-modes contributions are shown for to three bins \ell's respectively selected at lower (blue), intermediate (red), and higher (green) angular scales. Each upper panel quantifies the E contributions (E-to-B leakage) computed from the $EB$ block of \bar F_{\ell\ell'}. Lower panels quantify the BB contributions. Tegmark explains that \bar F_{\ell\ell'} quantifies the E-B leakage, and is equals to a kronecked delta function on full sky.

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Bicep
LiB

EB diagonals mixing

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Bicep
LiB
  • observation :
    • The E-to-B leakage is mostly dominant at large angular scales for the reionization survey, then decreases with \ell.
    • For the recombination survey, we observe the same beahaviour at high noise level, and the opposite behaviour for low noise levels (the leakage increases with $\ell$).
    • The E-B leakage increases with noise.

2.3  B to E leakage

Same as for E to E

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Bicep
LiB
  • observation :
    • The E-to-B leakage is mostly dominant at large angular scales for the reionization survey, then decreases with \ell.
    • For the recombination survey, we observe the same beahaviour at high noise level, and the opposite behaviour for low noise levels (the leakage increases with $\ell$).
    • The E-B leakage increases with noise.

2.4  E to B variance leakage

We basically do the same as above, but with the correlation matrix computed from the spectra of covariance matrix V_{\ell\ell'} (which is basically very close to F^{-1}_{\ell\ell'} )

modes :

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Bicep
LiB

EB diagonals (variance leakage)

taking the absolute value of correlation for log scale plotting (their are actually negatives)

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Bicep
LiB

Correlation matrix :

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Bicep
LiB
  • observation :

3.  Variance leakage

3.1  Surveys results :

  • area is the difference between the C_\ell{EE} \neq 0 and C_\ell{EE} =0 (leakage VS no-leakage)
  • the absolute leakge is compute as (\Delta \hat C^{\text{leak}}_\ell - \Delta \hat C^{\text{no-leak}}_\ell)/\Delta \hat C^{\text{no-leak}}_\ell
spectrum + absolute leakage