The universal galaxy cluster pressure profile from a representative sample of nearby systems (REXCESS) and the Y SZ – M 500 relation
Commissariat à l'Énergie Atomique et aux Énergies Alternatives · Centre National de la Recherche Scientifique · +9 more institutions
Abstract
We investigate the regularity of cluster pressure profiles with REXCESS, a representative sample of 33 local (z XMM-Newton. The sample spans a mass range of 1014 M500 15 , where M500 is the mass corresponding to a density contrast of 500. We derive an average profile from observations scaled by mass and redshift according to the standard self-similar model, and find that the dispersion about the mean is remarkably low, at less than 30 per cent beyond 0.2 R500, but increases towards the center. Deviations about the mean are related to both the mass and the thermo-dynamical state of the cluster. Morphologically disturbed systems have systematically shallower profiles while cooling core systems are more…
Citation impact
- FWCI
- 43.57
- Percentile
- 100%
- References
- 86
Authors
6- MAM. ArnaudCorresponding
Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Centre National de la Recherche Scientifique, Université Paris Cité, Astrophysique, Instrumentation et Modélisation, Institut de Recherche sur les Lois Fondamentales de l'Univers, CEA Paris-Saclay, Délégation Paris 7
- GWG. W. Pratt
Astrophysique, Instrumentation et Modélisation, Université Paris Cité, Max Planck Society, CEA Paris-Saclay, Centre National de la Recherche Scientifique, Institut de Recherche sur les Lois Fondamentales de l'Univers, Délégation Paris 7, Max Planck Institute for Extraterrestrial Physics, Commissariat à l'Énergie Atomique et aux Énergies Alternatives
- RPR. Piffaretti
Délégation Paris 7, Institut de Recherche sur les Lois Fondamentales de l'Univers, Université Paris Cité, Centre National de la Recherche Scientifique, Astrophysique, Instrumentation et Modélisation, CEA Paris-Saclay, Commissariat à l'Énergie Atomique et aux Énergies Alternatives
- HBHans Böhringer
Max Planck Institute for Extraterrestrial Physics, Max Planck Society
- JHJ. H. Croston
University of Southampton
Topics & keywords
- Scaling
- Physics
- Cluster (spacecraft)
- Galaxy cluster
- RADIUS
- Standard deviation
- Gravitation
- Statistical physics