Cosmological Fluctuations of Short Wavelength

Details Cosmological Fluctuations of Short Wavelength Cosmological Fluctuations of Short Wavelength

2002-07-18

arxiv.org/abs/astro-ph/0207375v1

Astrophys.J. 581 (2002) 810-816

Astronomy and Astrophysics

Astrophysics

15 pages, no figures

Scientific paper

10.1086/344441

This paper presents a completely analytic treatment of cosmological fluctuations whose wavelength is small enough to come within the horizon well before the energy densities of matter and radiation become equal. This analysis yields a simple formula for the conventional transfer function T(k) at large wave number k, which agrees very well with computer calculations of T(k). It also yields an explicit formula for the microwave background multipole coefficient C_ell at very large ell.

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