In the present paper, we studied the correlations among different quantities in the clusters of galaxies observed by Newman et al. We found an anti-correlation among the slope α, the effective radius, R e , and a correlation among the core radius r core and R e . Moreover, the mass in 100 kpc (mainly dark matter) is correlated with the mass inside 5 kpc (mainly baryons). The previous correlations can be understood in a two phase formation model: a first dissipative phase forming the proto-BCG and a second dissipationless phase, in which the inner density profile is flattened by the interaction of baryonic clumps and the DMhalo through dynamical friction (DF)
Titolo: | On the Inner Structure of Virialized Clusters | |
Autori interni: | ||
Data di pubblicazione: | 2019 | |
Rivista: | ||
Handle: | http://hdl.handle.net/20.500.11769/374610 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |