Evolution of galaxy clusters in $\Lambda$MDM cosmologies
摘要
The time evolution of galaxy cluster abundance is used to constrain cosmological parameters in dark matter models containing a fraction of hot particles (massive neutrino). We test the modified MDM models with cosmic gravitational waves which are in agreement with observational data at , and show that they do not pass the cluster evolution test and therefore should be ruled out. The models with a non-zero cosmological constant are in better agreement with the evolution test. We estimate and find that it is strongly affected by a small fraction of hot dark matter: for .
引用
@article{arxiv.astro-ph/0106559,
title = {Evolution of galaxy clusters in $\Lambda$MDM cosmologies},
author = {N. A. Arkhipova and T. Kahniashvili and V. N. Lukash},
journal= {arXiv preprint arXiv:astro-ph/0106559},
year = {2007}
}
备注
9 pages, 12 figures included; to be published in Proceedings of XXXVIth Rencontres de Moriond "Galaxy clusters and the high-redshift Universe observed in X-rays" (Les Arcs, France, March 10-17, 2001)