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arXiv · 1602.00302

On the relativistic mass function and averaging in cosmology

Jan J. Ostrowski·Thomas Buchert·Boudewijn F. Roukema
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Abstract

The general relativistic description of cosmological structure formation is an important challenge from both the theoretical and the numerical point of views. In this paper we present a brief prescription for a general relativistic treatment of structure formation and a resulting mass function on galaxy cluster scales in a highly generic scenario. To obtain this we use an exact scalar averaging scheme together with the relativistic generalization of Zel'dovich's approximation (RZA) that serves as a closure condition for the averaged equations.

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Jan J. Ostrowski, Thomas Buchert, Boudewijn F. Roukema. 2016-01-31. On the relativistic mass function and averaging in cosmology. https://doi.org/10.1142/9789813226609_0271

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