Bullet Cluster: A Challenge to LambdaCDM Cosmology Speaker(s): Eiichiro Komatsu
Abstract: We show that the existence of the bullet cluster, 1E065756,
is incompatible with the prediction of the standard Lambda CDM
cosmology. The probability of finding the large infall velocity (3000 km/s)
necessary for explaining the Xray and weak lensing data of 1E065756 is
between 3.3x10^{11} and 3.6x10^{9}. The existence of the bullet cluster
poses a serious challenge to LCDM cosmology, unless a lower infall
velocity solution for 1E065756 with <1800 km/s is found.
Date: 29/04/2010  11:00 am
