Publication
Title
Modelling recombinations during cosmological reionization
Author
Abstract
An ionization front expanding into a neutral medium can be slowed down significantly by recombinations. In cosmological numerical simulations the recombination rate is often computed using a clumping factor that takes into account that not all scales in the simulated density field are resolved. Here we demonstrate that using a single value of the clumping factor significantly overestimates the recombination rate, and how a local estimate of the clumping factor is both easy to compute, and gives significantly better numerical convergence. We argue that this lower value of the recombination rate is more relevant during the reionization process and hence that the importance of recombinations during reionization has been overestimated.
Language
English
Source (journal)
Monthly notices of the Royal Astronomical Society : letters. - Oxford, 2005, currens
Publication
Oxford : 2011
ISSN
1745-3933
1745-3925 [opgeheven]
Volume/pages
412 :1 (2011) , p. L16-L19
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Record
Identifier
Creation 07.04.2011
Last edited 07.10.2022
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