Understand
I show that the most common method of quantifying the likelihood that an extreme galaxy cluster could exist is biased and can result in false claims of tension with LambdaCDM.
- This common method uses the probability that at least one cluster could exist above the mass and redshift of an observed cluster.
- I demonstrate the existence of the bias using sample cluster populations, describe its origin and explain how to remove it.
- I then suggest potentially more suitable and unbiased measures of the rareness of individual clusters.
Reading the bibliography…