Radiative Transfer Effects during Photoheating of the Intergalactic Medium | Zendy

Tom Abel | Zendy; Martin G. Haehnelt | Zendy

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Radiative Transfer Effects during Photoheating of the Intergalactic Medium

Author(s) -

Tom Abel,

Martin G. Haehnelt

Publication year - 1999

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/312136

Subject(s) - reionization , intergalactic medium , radiative transfer , physics , astrophysics , absorption (acoustics) , redshift , galaxy , optics

The thermal history of the intergalactic medium (IGM) after reionization isto a large extent determined by photoheating. Here we demonstrate thatcalculations of the photoheating rate which neglect radiative transfer effectssubstantially underestimate the energy input during and after reionization. Theneglect of radiative transfer effects results in temperatures of the IGM whichare too low by a factor of two after HeII reionization. We briefly discussimplications for the absorption properties of the IGM and the distribution ofbaryons in shallow potential wells.Comment: 4 pages, 2 figures, submitted to ApJ

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