The DOI matches its Crossref record; 6 of the 6 references it cites were found in a registry or an index.
Relative velocity of dark matter and baryonic fluids and the formation of the first structures
Open accessAbstract
At the time of recombination, baryons and photons decoupled and the sound speed in the baryonic fluid dropped from relativistic, $\ensuremath{\sim}c/\sqrt{3}$, to the thermal velocities of the hydrogen atoms, $\ensuremath{\sim}2\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}c$. This is less than the relative velocities of baryons and dark matter computed via linear perturbation theory, so we infer that there are supersonic coherent flows of the baryons relative to the underlying potential wells created by the dark matter. As a result, the advection of small-scale perturbations (near the baryonic Jeans scale) by large-scale velocity flows is important for the formation of the first structures. This effect involves a quadratic term in the cosmological perturbation theory equations and hence has not been included in studies based on linear perturbation theory. We show that the relative motion suppresses the abundance of the first bound objects, even if one only investigates dark matter haloes, and leads to qualitative changes in their spatial distribution, such as introducing scale-dependent bias and stochasticity. We further discuss the possible observable implications of this effect for high-redshift galaxy clustering and reionization.
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Cites
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Cited by
Alam, S., Ata, M., Bailey, S., Beutler, F., Bizyaev, D., Blazek, J. A., Bolton, A. S., Brownstein, J. R., Burden, A., Chuang, C.-H., et al. (2017) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stx721 · Cited by 3,056
Anderson, L., Aubourg, E., Bailey, S., Bizyaev, D., Blanton, M., Bolton, A. S., Brinkmann, J., Brownstein, J. R., Burden, A., Cuesta, A. J., et al. (2012) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2012.22066.x · Cited by 893
Desjacques, V., Jeong, D., & Schmidt, F. (2018) · Physics Reports · doi:10.1016/j.physrep.2017.12.002 · Cited by 817
Bernal, J. L., Verde, L., & Riess, A. G. (2016) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2016/10/019 · Cited by 733
The Assembly of the First Massive Black Holes
Inayoshi, K., Visbal, E., & Haiman, Z. (2020) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-120419-014455 · Cited by 665
Metadata
- Authors
- Tseliakhovich, D., & Hirata, C.
- Venue
- Physical Review D
- Publisher
- American Physical Society (APS)
- Published
- 2010-10-18
- Volume
- 82
- Issue
- 8
- ISSN
- 0556-2821 (ISSN-L)
- 1550-7998
- 1550-2368
- OpenAlex
- W2043510952
- Cited by
- 459
- References
- 6
- FWCI
- 10.94
- Type
- journal article
- Language
- en
- Open access
- green
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