Statistical Mechanics of galaxy Clusters

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Naseer Iqbal

Department of Physics University of Kashmir Srinagar, India

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Abstract:  Galaxies cluster under the influence of their mutual gravitation and the characterization of this clustering problem is a subject of great interest as it somehow helps in understanding the structure formation of the universe. In the last two decades many approaches have been developed in understanding the LSS of the universe from galaxies to the cosmic web like percolation, topology, distribution functions, voids, correlation functions and fractals. All of them have been found useful in studying the clustering of galaxies problem. We have developed the theory on the basis of statistical mechanics and thermodynamics and have found it a convenient method for describing various statistical properties of galaxy clusters in an expanding universe. Statistical mechanical treatment of the cosmological many body problem in combination with the thermodynamics explains the behaviour of entropy and very recently we have postulated that how a kind of cosmological phase transition can also be described for galaxy clusters. The analytical method developed in our theory has been extended from point mass model to extended mass model of galaxy clusters. We also study various dynamical properties of galaxy clusters. In my talk, I will discuss the development of our theoretical model.

دوشنبه 8 شهریور ماه 1395، ساعت 10:00

    دانشکده فیزیک، تالار پرتوی – 412