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Reionization and small-scale fluctuations in the microwave background
Abstract
It is shown that electron scattering off the moving ionized medium can regenerate arcminute fluctuations in almost all models of galaxy formation. Explicit calculations are presented for matter-dominated, Omega-0 = 1 cosmologies with hot dark matter and cold dark matter. Scaling arguments are also derived to show the size of this effect in models with Omega-0 less than 1, an epoch of radiation domination, or a sizable cosmological constant. In the first two cases, the fluctuations due to reionization scale as the amplitude of the perturbation spectrum to a power close to 2. In the last case, the fluctuations scale with the amplitude of the perturbation spectrum. This result depends on including terms that are second order in the amplitude of cosmological density perturbations, but the motions involved are strictly linear.
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Cited by
The Formation of the First Stars. I. The Primordial Star‐forming Cloud
Bromm, V., Coppi, P. S., & Larson, R. B. (2002) · The Astrophysical Journal · doi:10.1086/323947 · Cited by 1,078
Birkinshaw, M. (1999) · Physics Reports · doi:10.1016/s0370-1573(98)00080-5 · Cited by 851
Cosmic Microwave Background Anisotropies
Hu, W., & Dodelson, S. (2002) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.40.060401.093926 · Cited by 745
Teaching Neural Networks to Generate Fast Sunyaev–Zel’dovich Maps
Thiele, L., Villaescusa-Navarro, F., Spergel, D. N., Nelson, D., & Pillepich, A. (2020) · The Astrophysical Journal · doi:10.3847/1538-4357/abb80f · Cited by 16
“Treatments of the kSZ effect begin with linear theory (Ostriker & Vishniac 1986; Vishniac 1987; Jaffe & Kamionkowski 1998), and then were extended to non-linear scales (Valageas et al. 2001; Ma & Fry 2002; Zhang et al. 2004; Park et al. 2016).”
Method
Metadata
- Authors
- Vishniac, E. T.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1987-11
- Volume
- 322
- Pages
- 597
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2056892528
- Cited by
- 227
- References
- 0
- FWCI
- 6.66
- Type
- journal article
- Language
- en
- Open access
- closed
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- Vishniac, E. T. (1987). Reionization and small-scale fluctuations in the microwave background. The Astrophysical Journal. https://doi.org/10.1086/165755
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