A hypothesis to explain the virial discrepancy in clusters of galaxies |
| |
| Authors: | P S Wesson Aksel Lermann |
| |
| Institution: | (1) Dept. of Physics, Queen's University, Kingston, Ontario, Canada;(2) Institute of Astronomy, Cambridge University, England;(3) F. Mat. Fysikk, University of Oslo, Blindern, Norway |
| |
| Abstract: | On the basis of numerical experiments onn-body binding energies we tentatively consider the following hypothesis: If the distance between two galaxies forming a binary system isa
g, and a cluster of galaxies that is substructured in a hierarchical fashion onall scales froma
g upwards has a total massM, then the total gravitational binding energy of the cluster is
TH
= –GM
2/2a
g
. As an explanation for  missing masses up to order 100 we test this hypothesis in three different ways, finding remarkable agreement with observation, with no need for physical missing mass. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
