Effect of early dark matter halos on reionization

Natarajan A, Schwarz D (2008)
PHYSICAL REVIEW D 78(10).

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
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Abstract / Bemerkung
The annihilation of dark matter particles releases energy, ionizing some of the gas in the Universe. We investigate the effect of dark matter halos on reionization. We show that the effect depends on the assumed density profile, the particle mass, and the assumed minimum halo mass. For Navarro-Frenk-White halos and typical WIMPs, we find the effect to be quite small. However, light dark matter candidates in the MeV range can contribute significantly to reionization and can make an important contribution to the measured optical depth. This effect may be used to constrain light dark matter models. We also study the effect of varying the halo density profile on reionization.
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Zeitschriftentitel
PHYSICAL REVIEW D
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78
Zeitschriftennummer
10
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Natarajan A, Schwarz D. Effect of early dark matter halos on reionization. PHYSICAL REVIEW D. 2008;78(10).
Natarajan, A., & Schwarz, D. (2008). Effect of early dark matter halos on reionization. PHYSICAL REVIEW D, 78(10). doi:10.1103/PhysRevD.78.103524
Natarajan, A., and Schwarz, D. (2008). Effect of early dark matter halos on reionization. PHYSICAL REVIEW D 78.
Natarajan, A., & Schwarz, D., 2008. Effect of early dark matter halos on reionization. PHYSICAL REVIEW D, 78(10).
A. Natarajan and D. Schwarz, “Effect of early dark matter halos on reionization”, PHYSICAL REVIEW D, vol. 78, 2008.
Natarajan, A., Schwarz, D.: Effect of early dark matter halos on reionization. PHYSICAL REVIEW D. 78, (2008).
Natarajan, Aravind, and Schwarz, Dominik. “Effect of early dark matter halos on reionization”. PHYSICAL REVIEW D 78.10 (2008).

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arXiv: 0805.3945

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