X-ray properties of present-day galaxy systems from an inside-out growth model in a preheating scenario

J. Solanes; A. Manrique; G. González-Casado; E. Salvador-Solé

doi:10.1051/eas:2006098

All issues

Volume 20 (2006)

EAS Publications Series, 20 (2006) 297-298

Abstract

Issue		EAS Publications Series Volume 20, 2006 Mass Profiles and Shapes of Cosmological Structures


Page(s)		297 - 298
DOI		https://doi.org/10.1051/eas:2006098
Published online		19 May 2006

Mass Profiles and Shapes of Cosmological Structures
G.A. Mamon, F. Combes, C. Deffayet and B. Fort (eds)
EAS Publications Series, 20 (2006) 297-298

X-ray properties of present-day galaxy systems from an inside-out growth model in a preheating scenario

J. Solanes¹, A. Manrique¹, G. González-Casado² and E. Salvador-Solé¹

¹ Departament d'Astronomia i Meteorologia i CER d'Astrofísica, Partícules i Cosmologia, Universitat de Barcelona, Spain
² Departament de Matemàtica Aplicada II, Universitat Politècnica de Catalunya, Spain

Abstract

We have developed an analytic model for a preheated, polytropic IGM in hydrostatic equilibrium within a NFW potential in which the evolution of the halo structure between major merger events proceeds inside-out by accretion. For a polytropic index of 1.2, consistent with both many observational results and predictions from high-resolution gasdynamical simulations, our model is capable of reproducing faithfully all the observed X-ray properties of nearby relaxed, non-cooling flow groups and clusters of galaxies with a universal level of energy injection of about half a keV (see Solanes et al. 2005 for details).