SIMBAD references

Very massive high-redshift clusters can be used to constrain and test the Λ cold dark matter (ΛCDM) model. Taking into account the observational constraints of Jee et al., we have calculated the probability for the most massive cluster to be found in the range (5.2–7.6) {x} 10¹⁴ M_☉, between redshifts 1.4 ≤ z ≤ 2.2, with a sky area of 11 deg² 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.