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Briefly explain what is meant by "particle horizon" and "event horizon" in cosmology. Calculate the physical particle horizon, Ru(t), at time t. Assume a flat FRW universe which is dominated by a fluid that gives rise to scale factor evolution (-)", where n is a constant with 0

Briefly explain what is meant by "particle horizon" and "event horizon" in cosmology. Calculate the physical particle horizon, Ru(t), at time t. Assume a flat FRW universe which is dominated by a fluid that gives rise to scale factor evolution (-)", where n is a constant with 0

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a) Briefly explain what is meant by "particle horizon" and "event horizon" in cosmology. b) Calculate the physical particle horizon, RH (t), at time t. Assume a flat FRW universe which is dominated by a fluid that gives rise to scale factor evolution a(t) = ao ()*, to where n is a constant with 0 <n< 1, and a (to) = ao. n
Transcribed Image Text:a) Briefly explain what is meant by "particle horizon" and "event horizon" in cosmology. b) Calculate the physical particle horizon, RH (t), at time t. Assume a flat FRW universe which is dominated by a fluid that gives rise to scale factor evolution a(t) = ao ()*, to where n is a constant with 0 <n< 1, and a (to) = ao. n
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