Secondary CMB Anisotropy I: Reionization - Wayne Hu's Tutorials
Secondary CMB Anisotropy I: Reionization - Wayne Hu's Tutorials
Secondary CMB Anisotropy I: Reionization - Wayne Hu's Tutorials
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(2l+1)j l (100)<br />
Doppler Effect in Limber Approximation<br />
• Only fluctuations transverse to line of sight survive in Limber approx<br />
but linear Doppler effect has no contribution in this direction<br />
d<br />
observer<br />
0<br />
0<br />
j Y0 l(kd)Yl Temperature Doppler<br />
l<br />
(2l+1)j l '(100)<br />
observer<br />
l<br />
d<br />
0<br />
0<br />
j Y<br />
l(kd)Yl 1
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