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Secondary CMB Anisotropy I: Reionization - Wayne Hu's Tutorials

Secondary CMB Anisotropy I: Reionization - Wayne Hu's Tutorials

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Principal Components<br />

• Eigenvectors of the Fisher Matrix<br />

Fij ≡ <br />

(ℓ + 1/2)TℓiTℓj = <br />

δx δx<br />

Hu & Holder (2003)<br />

ℓ<br />

0.5<br />

0<br />

-0.5<br />

0.5<br />

0<br />

-0.5<br />

(a) Best<br />

(b) Worst<br />

10 15<br />

µ<br />

Siµσ −2<br />

µ Sjµ<br />

z<br />

20 25

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