courses:ast403:redshift-surveys
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| courses:ast403:redshift-surveys [2026/04/06 10:52] – [DESI BAO Survey] shuvo | courses:ast403:redshift-surveys [2026/04/06 22:27] (current) – [DESI BAO Survey] shuvo | ||
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| $$w(a) = w_0 + w_a (1 - a)$$ | $$w(a) = w_0 + w_a (1 - a)$$ | ||
| - | Here: | + | Here:\\ |
| - | * $w_0$ is the current value of the dark energy equation of state at $z = 0$. | + | * $w_0$ is the current value of the dark energy equation of state at $z = 0$.\\ |
| - | * $w_a$ dictates how quickly $w$ evolves with time. | + | * $w_a$ dictates how quickly $w$ evolves with time.\\ |
| - | * *(Note: $\Lambda$CDM strictly requires $w_0 = -1$ and $w_a = 0$)*. | + | * (Note: $\Lambda$CDM strictly requires $w_0 = -1$ and $w_a = 0$).\\ |
| When the DESI collaboration combined their Y1 BAO measurements with CMB data and Type Ia Supernova data, the statistical fit preferred a parameter space where **$w_0 > -1$ and $w_a < 0$**. | When the DESI collaboration combined their Y1 BAO measurements with CMB data and Type Ia Supernova data, the statistical fit preferred a parameter space where **$w_0 > -1$ and $w_a < 0$**. | ||
courses/ast403/redshift-surveys.1775494374.txt.gz · Last modified: by shuvo