Abstract
We inquire the phenomena of clustering of galaxies in an expanding universe from a theoretical point of view on the basis of thermodynamics and correlation functions. The partial differential equation is developed both for the point mass and extended mass structures of a two-point correlation function by using thermodynamic equations in combination with the equation of state taking gravitational interaction between particles into consideration. The unique solution physically satisfies a set of boundary conditions for correlated systems and provides a new insight into the gravitational clustering problem.
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Iqbal, N., Ahmad, F. & Khan, M.S. Gravitational clustering of galaxies in an expanding universe. J Astrophys Astron 27, 373–379 (2006). https://doi.org/10.1007/BF02709363
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DOI: https://doi.org/10.1007/BF02709363