Probability of the most massive cluster under non-Gaussian initial conditions

Details Probability of the most massive cluster under non-Gaussian initial conditions Probability of the most massive cluster under non-Gaussian initial conditions

2010-06-10

arxiv.org/abs/1006.1950v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Matches MNRAS accepted version

Scientific paper

Very massive high redshift clusters can be used to constrain and test the Lambda CDM model. Taking into account the observational constraints of Jee et al. (2009) we have calculated the probability for the most massive cluster to be found in the range (5.2-7.6)e14 M_sun, between redshifts 1.4-2.2, with a sky area of 11 sqdeg and under non-Gaussian initial conditions. Clusters constrain the non-Gaussianity on smaller scales than current cosmic microwave background or halo bias data and so can be used to test for running of the non-Gaussianity parameter f_NL.

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