Was there an early reionization component in our universe?
Abstract
A deep understanding of the Epoch of Reionization is still missing in our knowledge of the universe. While future probes will allow us to test the precise evolution of the free electron fraction from redshifts between $$z\simeq 6$$ and $$z\simeq 20$$, at present one could ask what kind of reionization processes are allowed by present Cosmic Microwave Background temperature and polarization measurements. An early contribution to reionization could imply a departure from the standard picture where star formation determines the reionization onset. BBy considering a broad class of possible reionization parameterizations, we find that current data do not require an early reionization component in our universe and that only one marginal class of models, based on a particular realization of reionization, may point to that. In addition, the frequentist Akaike Information Criterion (AIC) provides strong evidence against alternative reionization histories, favoring the most simple reionization scenario, which describes reionization by means of only one (constant) reionization optical depth $$\tau$$.
- Authors:
-
- Spanish National Research Council (CSIC), Valencia (Spain). Univ. of Valencia (UV), Inst. de Fisica Corpuscular
- Univ. of Chicago, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- OSTI Identifier:
- 1431582
- Report Number(s):
- FERMILAB-PUB-17-605-A; arXiv:1712.02807
Journal ID: ISSN 1475-7516; 1642197; TRN: US1802390
- Grant/Contract Number:
- AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Cosmology and Astroparticle Physics
- Additional Journal Information:
- Journal Volume: 2018; Journal Issue: 04; Journal ID: ISSN 1475-7516
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS
Citation Formats
Villanueva-Domingo, Pablo, Gariazzo, Stefano, Gnedin, Nickolay Y., and Mena, Olga. Was there an early reionization component in our universe?. United States: N. p., 2018.
Web. https://doi.org/10.1088/1475-7516/2018/04/024.
Villanueva-Domingo, Pablo, Gariazzo, Stefano, Gnedin, Nickolay Y., & Mena, Olga. Was there an early reionization component in our universe?. United States. https://doi.org/10.1088/1475-7516/2018/04/024
Villanueva-Domingo, Pablo, Gariazzo, Stefano, Gnedin, Nickolay Y., and Mena, Olga. Fri .
"Was there an early reionization component in our universe?". United States. https://doi.org/10.1088/1475-7516/2018/04/024. https://www.osti.gov/servlets/purl/1431582.
@article{osti_1431582,
title = {Was there an early reionization component in our universe?},
author = {Villanueva-Domingo, Pablo and Gariazzo, Stefano and Gnedin, Nickolay Y. and Mena, Olga},
abstractNote = {A deep understanding of the Epoch of Reionization is still missing in our knowledge of the universe. While future probes will allow us to test the precise evolution of the free electron fraction from redshifts between $z\simeq 6$ and $z\simeq 20$, at present one could ask what kind of reionization processes are allowed by present Cosmic Microwave Background temperature and polarization measurements. An early contribution to reionization could imply a departure from the standard picture where star formation determines the reionization onset. BBy considering a broad class of possible reionization parameterizations, we find that current data do not require an early reionization component in our universe and that only one marginal class of models, based on a particular realization of reionization, may point to that. In addition, the frequentist Akaike Information Criterion (AIC) provides strong evidence against alternative reionization histories, favoring the most simple reionization scenario, which describes reionization by means of only one (constant) reionization optical depth $\tau$.},
doi = {10.1088/1475-7516/2018/04/024},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 04,
volume = 2018,
place = {United States},
year = {2018},
month = {4}
}
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Decaying Particles and the Reionization History of the Universe
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Effect of early dark matter halos on reionization
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Dark matter annihilation and its effect on CMB and hydrogen 21 cm observations
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How dark matter reionized the Universe
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Effects of Dark Matter Annihilation on the Cosmic Microwave Background
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Distinguishing standard reionization from dark matter models
journal, June 2010
- Natarajan, Aravind; Schwarz, Dominik J.
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Cosmic microwave background limits on accreting primordial black holes
journal, February 2017
- Ali-Haïmoud, Yacine; Kamionkowski, Marc
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CMB bounds on disk-accreting massive primordial black holes
journal, October 2017
- Poulin, Vivian; Serpico, Pasquale D.; Calore, Francesca
- Physical Review D, Vol. 96, Issue 8
Robustness of cosmological axion mass limits
journal, June 2015
- Di Valentino, Eleonora; Gariazzo, Stefano; Giusarma, Elena
- Physical Review D, Vol. 91, Issue 12
Primordial power spectrum features and constraints
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- Gariazzo, Stefano; Lopez-Honorez, Laura; Mena, Olga
- Physical Review D, Vol. 92, Issue 6
Dark radiation and inflationary freedom after Planck 2015
journal, April 2016
- Di Valentino, Eleonora; Gariazzo, Stefano; Gerbino, Martina
- Physical Review D, Vol. 93, Issue 8
Cosmological parameters from CMB and other data: A Monte Carlo approach
journal, November 2002
- Lewis, Antony; Bridle, Sarah
- Physical Review D, Vol. 66, Issue 10
Reionization in the warm dark Matter Model
journal, February 2012
- Yue, Bin; Chen, Xuelei
- The Astrophysical Journal, Vol. 747, Issue 2
Constraints on dark matter scenarios from measurements of the galaxy luminosity function at high redshifts
journal, April 2017
- Corasaniti, P. S.; Agarwal, S.; Marsh, D. J. E.
- Physical Review D, Vol. 95, Issue 8
A STRINGENT LIMIT ON THE WARM DARK MATTER PARTICLE MASSES FROM THE ABUNDANCE OF z = 6 GALAXIES IN THE HUBBLE FRONTIER FIELDS
journal, June 2016
- Menci, N.; Grazian, A.; Castellano, M.
- The Astrophysical Journal, Vol. 825, Issue 1
Warm dark matter and the ionization history of the Universe
journal, November 2017
- Lopez-Honorez, Laura; Mena, Olga; Palomares-Ruiz, Sergio
- Physical Review D, Vol. 96, Issue 10
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