Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2009-06-22
Adv.Space Res.44:440-445,2009
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
11 pages, 4 figures, ASR in press
Scientific paper
10.1016/j.asr.2009.05.006
From the first stages of star and galaxy formation, non-gravitational processes such as ram pressure stripping, SNs, galactic winds, AGNs, galaxy-galaxy mergers, etc... lead to the enrichment of the IGM in stars, metals as well as dust, via the ejection of galactic material into the IGM. We know now that these processes shape, side by side with gravitation, the formation and the evolution of structures. We present here hydrodynamic simulations of structure formation implementing the effect of the cooling by dust on large scale structure formation. We focus on the scale of galaxy clusters and study the statistical properties of clusters. Here we present our results on the $T_X-M$ and the $L_X-M$ scaling relations which exhibit changes on both the slope and normalization when adding cooling by dust to the standard radiative cooling model. For example, the normalization of the $T_X-M$ relation changes only by a maximum of 2% at $M=10^{14}$ M$_\odot$ whereas the normalization of the $L_X-T_X$ changes by as much as 10% at $T_X=1$ keV for models that including dust cooling. Our study shows that the dust is an added non-gravitational process that contributes shaping the thermodynamical state of the hot ICM gas.
Catalano Andrea
Giard Martin
Lanoux Joseph
Montier Ludovic
Pointecouteau Etienne
No associations
LandOfFree
Simulating the impact of dust cooling on the statistical properties of the intracluster medium 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 Simulating the impact of dust cooling on the statistical properties of the intracluster medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simulating the impact of dust cooling on the statistical properties of the intracluster medium will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-495791