Turbulent Velocity Fields in SPH--simulated Galaxy Clusters

Details Turbulent Velocity Fields in SPH--simulated Galaxy Clusters Turbulent Velocity Fields in SPH--simulated Galaxy Clusters

2006-02-10

arxiv.org/abs/astro-ph/0602247v2

Mon.Not.Roy.Astron.Soc.Lett. 369 (2006) L14-L18

Astronomy and Astrophysics

Astrophysics

5 pages, 5 figures, MNRAS Letters in press, minor revisions added

Scientific paper

10.1111/j.1745-3933.2006.00164.x

We present a study of the turbulent velocity fields in the Intra Cluster Medium of a sample of 21 galaxy clusters simulated by the SPH--code Gadget2, using a new numerical scheme where the artificial viscosity is suppressed outside shocks. The turbulent motions in the ICM of our simulated clusters are detected with a novel method devised to better disentangle laminar bulk motions from chaotic ones. We focus on the scaling law between the turbulent energy content of the gas particles and the total mass, and find that the energy in the form of turbulence scales approximatively with the thermal energy of clusters. We follow the evolution with time of the scaling laws and discuss the physical origin of the observed trends. The simulated data are in agreement with independent semi--analytical calculations, and the combination between the two methods allows to constrain the scaling law over more than two decades in cluster mass.

Affiliated with

Also associated with

No associations

Rating

Turbulent Velocity Fields in SPH--simulated Galaxy Clusters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Turbulent Velocity Fields in SPH--simulated Galaxy Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbulent Velocity Fields in SPH--simulated Galaxy Clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-599810