The Inhomogeneous Background of H2 Dissociating Radiation During Cosmic Reionization

Details The Inhomogeneous Background of H2 Dissociating Radiation During Cosmic Reionization The Inhomogeneous Background of H2 Dissociating Radiation During Cosmic Reionization

2008-07-06

arxiv.org/abs/0807.0920v1

AIP Conf.Proc.990:374-376,2008; Astrophys.J.695:1430-1445,2009

Astronomy and Astrophysics

Astrophysics

First Stars III Conference Proceedings; This is a summarized version of the journal paper to be submitted soon

Scientific paper

10.1088/0004-637X/695/2/1430

The first, self-consistent calculations of the cosmological H_2 dissociating UV background produced during the epoch of reionization (EOR) by the sources of reionization are presented. Large-scale radiative transfer simulations of reionization trace the impact of all the ionizing starlight on the IGM from all the sources in our simulation volume down to dwarf galaxies of mass ~ 10^8 solar mass, identified by very high-resolution N-body simulations, including the self-regulating effect of IGM photoheating on dwarf galaxy formation. The UV continuum emitted below 13.6 eV by each source is then transferred through the same IGM, attenuated by atomic H Lyman series resonance lines, to predict the evolution of the inhomogeneous background in the Lyman-Werner band of H_2 between 11 and 13.6 eV.

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