Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-29T00:53:59.636Z Has data issue: false hasContentIssue false
  • English
  • Français

Effects of small-scale structure on the progress and duration of reionization

Published online by Cambridge University Press:  06 October 2004

Ilian T. Iliev ,
Paul R. Shapiro ,
Evan Scannapieco  and
Alejandro C. Raga
Ilian T. Iliev
Affiliation:
Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George Street, Toronto, ON M5S 3H8, Canada e-mail: [email protected]
Paul R. Shapiro
Affiliation:
Department of Astronomy, University of Texas, Austin, TX 78712-1083
Evan Scannapieco
Affiliation:
Kavli Institute for Theoretical Physics, Kohn Hall, UC Santa Barbara, Santa Barbara, CA 93106
Alejandro C. Raga
Affiliation:
Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de México (UNAM), Apdo. Postal 70-543, 04510 México, D. F., México
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The propagation of cosmological ionization fronts during the reionization of the universe is strongly influenced by small-scale ($\sim$ kpc) gas inhomogeneities caused by structure formation. In this paper we study this important effect by performing detailed radiative-hydrodynamic simulations of photoevaporation of cosmological minihalos (MHs) and incorporating the results into a semi-analytical model of reionization, which also includes the effect of mean intergalactic medium (IGM) clumping and the nonlinear clustering of minihalos. We find that small-scale structures have a significant effect on the process of reionization, slowing it down and extending it in time. This can help in understanding the recent observations by the Wilkinson Microwave Anisotropy Probe (WMAP) satellite, which point to an early and extended reionization epoch.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUC195 , March 2004 , pp. 549 - 551
Copyright
© 2004 International Astronomical Union