Gravitational collapse and non-self similarity in the L-T relation

Abstract

We derive the luminosity-temperature relation for clusters of galaxies by means of a modification of the self-similar model to take account of angular momentum acquisition by protostructures and of an external pressure term in the virial theorem. The fundamental result of the model is that gravitational collapse, which takes account of angular momentum acquisition, can explain the non self-similarity in the L-T relation, in disagreement with the largely accepted assumption that heating/cooling processes and similar are fundamental in the originating the non-self similar behavior (shaping) of the L-T relation.

References in corpus (22)

• Statistical Properties of X-ray Clusters: Analytic and Numerical Comparisons
• Using the Evolution of Clusters to Constrain Omega
• Simulations of X-ray Clusters
• Mass Estimates of X-Ray Clusters
• The Imprint of Galaxy Formation on X-ray Clusters
• The Temperature Structure of 30 Nearby Clusters Observed with ASCA. Similarity of Temperature Profiles
• Details of the mass--temperature relation for clusters of galaxies
• The impact of cooling flows on the Tx-Lbol relation for the most luminous clusters
• Regulation of the X-ray luminosity of clusters of galaxies by cooling and supernova feedback
• Pre-Heated Isentropic Gas in Groups of Galaxies
• Observational Tests of the Mass-Temperature Relation for Galaxy Clusters
• Explaining the entropy excess in clusters and groups of galaxies without additional heating
• The Luminosity-Temperature Relation for Groups and Clusters of Galaxies
• The cluster M-T relation from temperature profiles observed with ASCA and ROSAT
• The effect of radiative cooling on scaling laws of X-ray groups and clusters
• Diffuse Baryons in Groups and Clusters of Galaxies
• Hot Gas in Clusters of Galaxies: the Punctuated Equilibria Model
• The Mass-Temperature Relation of 22 Nearby Clusters
• Mass-temperature relation of galaxy clusters: implications from the observed luminosity-temperature relation and X-ray temperature function
• Cluster Tempreature Evolution: The Mass-Temperature Relation
• A theoretical study of the mass temperature relation for clusters of galaxies
• The Effect of Formation Redshifts on the Cluster Mass-Temperature Relation