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

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arxiv astro-ph/0206421 v1 pith:OG475HY7 submitted 2002-06-24 astro-ph

classification astro-ph
keywords scalefilteringlinearmatteransatzapproximationbaryonsdark
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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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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. 3D matter power spectrum correspondence to 1D Lyman-alpha flux power spectrum

    astro-ph.CO 2025-05 conditional novelty 6.0 of 10

    A phenomenological recipe maps 3D matter power to 1D Lyman-alpha flux power, adds warm dark matter and pressure cutoffs in quadrature, and matches simulations to within 5-20%.

  2. Lyman-$\alpha$ forest constraints on pure and mixed fuzzy dark matter

    astro-ph.CO 2026-06 unverdicted novelty 5.0 of 10

    Lyman-alpha forest data yield m_FDM > 1.9e-21 eV (95% CL) for pure FDM and f_FDM upper limits of 0.07-0.65 for mixed FDM at log10(m_FDM/eV) = -23 to -21.

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