Abstract
The basic observational facts known about the intergalactic medium in both smoothly distributed (IGM) and clumped forms (Lyα clouds) are reviewed. Six candidate theories of Lyα clouds and the IGM are compared with the essential non-controversial observational facts. Deficiencies of the theories and inconsistencies in the existing data sets are stressed. The three most plausible candidate theories successfully explain some aspects of the IGM, but fail to explain others. A new approach, employing hydrodynamic N-body simulations is presented. In this approach elements of several theories are combined in an effort to study the evolution of the IGM and the formation and properties of Lyα clouds. Preliminary results of such simulations are presented and compared to observations.
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Bajtlik, S. (1993). The Evolution of the Intergalactic Medium and Lyman-Alpha Clouds: Comparison of Theories and Observations. In: Shull, J.M., Thronson, H.A. (eds) The Environment and Evolution of Galaxies. Astrophysics and Space Science Library, vol 188. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-1882-8_13
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DOI: https://doi.org/10.1007/978-94-011-1882-8_13
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