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7-Benchmark Model (Measuring distances (Luminosity distance (Consider…
7-Benchmark Model
Measuring distances
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Luminosity distance
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hard to know intrinsic luminosity, which is required for the redshift-distance relationship, calculating a(t) and other parameters
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Standard candles
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type 1a supernovae
white dwarf accretes mass from a binary partner, and undergoes carbon fusion as it approaches chandrasekhar limit 1.4msun
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for real universe
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find the a(t) which fits them best, and get the corresponding energy densities
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Cannot be solved analytically, only numerically
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