By semi analytic approach, the estimate of the properties of the largest virialized dark halos in the present universe is presented for three different scenarios of structure formation: SCDM, ΛCDM and OCDM models. Th...By semi analytic approach, the estimate of the properties of the largest virialized dark halos in the present universe is presented for three different scenarios of structure formation: SCDM, ΛCDM and OCDM models. The resulting virial mass increases from the lowest values of 1.6×10 15 h -1 M ⊙ in OCDM, the mid range values of 9.0×10 15 h -1 M ⊙ in ΛCDM, to the highest values of 20.9×10 15 h -1 M ⊙ in SCDM. As compared with the largest virialized object seen in the universe, the OCDM model can safely be ruled out. Therefore, the computation in this paper favors the prevailing ΛCDM model in which superclusters may be marginally regarded as dynamically virialized systems.展开更多
文摘By semi analytic approach, the estimate of the properties of the largest virialized dark halos in the present universe is presented for three different scenarios of structure formation: SCDM, ΛCDM and OCDM models. The resulting virial mass increases from the lowest values of 1.6×10 15 h -1 M ⊙ in OCDM, the mid range values of 9.0×10 15 h -1 M ⊙ in ΛCDM, to the highest values of 20.9×10 15 h -1 M ⊙ in SCDM. As compared with the largest virialized object seen in the universe, the OCDM model can safely be ruled out. Therefore, the computation in this paper favors the prevailing ΛCDM model in which superclusters may be marginally regarded as dynamically virialized systems.
