SIMBAD references

2015MNRAS.447.2915M - Mon. Not. R. Astron. Soc., 447, 2915-2924 (2015/March-1)

Simulations of gas sloshing in galaxy cluster Abell 2052.


Abstract (from CDS):

The intracluster plasma of Abell 2052 exhibits in X-rays a spiral structure extending more than 250 kpc, which is comprised of cool gas. This feature is understood to be the result of gas sloshing caused by the off-axis collision with a smaller subcluster. We aim to recover the dynamical history of Abell 2052 and to reproduce the broad morphology of the spiral feature. To this end, we perform hydrodynamical N-body simulations of cluster collisions. We obtain two regimes that adequately reproduce the desired features. The first scenario is a close encounter and a recent event (0.8Gyr since pericentric passage), while the second scenario has a larger impact parameter and is older (almost 2.6Gyr since pericentric passage). In the second case, the simulation predicts that the perturbing subcluster should be located approximately 2 Mpc from the centre of the major cluster. At that position, we are able to identify an observed optical counterpart at the same redshift: a galaxy group with M500 = (1.16 ± 0.43)x1013M.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): methods: numerical - galaxies: clusters: individual: A2052 - galaxies: clusters: intracluster medium

Simbad objects: 6

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