The Damping Tail of CMB Anisotropies

Details The Damping Tail of CMB Anisotropies The Damping Tail of CMB Anisotropies

1996-09-10

arxiv.org/abs/astro-ph/9609079v1

Astrophys.J.479:568,1997

Astronomy and Astrophysics

Astrophysics

24pgs, aaspp4, 10 figs. included; supporting material (e.g. color figures) at http://www.sns.ias.edu/~whu/pub.html

Scientific paper

10.1086/303928

By decomposing the damping tail of CMB anisotropies into a series of transfer functions representing individual physical effects, we provide ingredients that will aid in the reconstruction of the cosmological model from small-scale CMB anisotropy data. We accurately calibrate the model-independent effects of diffusion and reionization damping which provide potentially the most robust information on the background cosmology. Removing these effects, we uncover model-dependent processes such as the acoustic peak modulation and gravitational enhancement that can help distinguish between alternate models of structure formation and provide windows into the evolution of fluctuations at various stages in their growth.

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