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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.)