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Linear Gas Dynamics in the Expanding Universe: Why the Jeans Scale does not Matter

Nickolay Y. Gnedin·Emily J. Baker·Thomas J. Bethell·Meredith M. Drosback·A. Gayler Harford·Amalia K. Hicks·Adam G. Jensen·Brian A. Keeney·Christopher M. Kelso·Mark C. Neyrinck·Scott E. Pollack·Timothy P. van Vliet
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Abstract

We investigate the relationship between the dark matter and baryons in the linear regime. This relation is quantified by the so-called ``filtering scale''. We show that a simple gaussian ansatz which uses the filtering scale provides a good approximation to the exact solution.

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Nickolay Y. Gnedin, Emily J. Baker, Thomas J. Bethell, Meredith M. Drosback, A. Gayler Harford, Amalia K. Hicks, Adam G. Jensen, Brian A. Keeney, Christopher M. Kelso, Mark C. Neyrinck, Scott E. Pollack, Timothy P. van Vliet. 2002-06-24. Linear Gas Dynamics in the Expanding Universe: Why the Jeans Scale does not Matter. https://doi.org/10.1086/345424

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