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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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Whence Quadrupoles?<br />

• Temperature inhomogeneities in a medium<br />

• Photons arrive from different regions producing an anisotropy<br />

Hu & White (1997)<br />

hot<br />

cold<br />

hot<br />

(Scalar) Temperature Inhomogeneity

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