Introduction to Cosmology Example Exam Question

Lecture 16: Growth of Structure, part 2

CMB power spectrum
The diagram shows the CMB power spectrum using data from WMAP, CBI and ACBAR.

Briefly explain exactly what the "CMB power spectrum" actually is and what the symbols l and Cl represent.
[3]
Compare and contrast, carefully but without detailed mathematics, the growth of structure in a universe dominated by (i) non-baryonic cold dark matter, (ii) non-baryonic hot dark matter and (iii) baryonic matter. [5]

(2005 Resit, part of Q8.)

Go to the hints and suggestions.