Source Mergers and Bubble Growth During Reionization

Abstract

The recently introduced models of reionization bubbles based on extended Press-Schechter theory (Furlanetto, Zaldarriaga & Hernquist 2004) are generalized to include mergers of ionization sources. Sources with a recent major merger are taken to have enhanced photon production due to star formation, and accretion onto a central black hole if a black hole is present. This produces a scatter in the number of ionized photons corresponding to a halo of a given mass and a change in photon production over time for any given halo mass. Photon production histories, bubble distributions, and ionization histories are computed for several different parameter and recombination assumptions; the resulting distributions interpolate between previously calculated limiting cases.

44 pages, 11 figures, version to appear in MNRAS. Some discussion of case with WMAP parameters and expanded explanations

References in corpus (3)

• Observational constraints on Cosmic Reionization
• Simulating Cosmic Reionization at Large Scales II: the 21-cm Emission Features and Statistical Signals
• Minihalo photoevaporation during cosmic reionization: evaporation times and photon consumption rates

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• Reionisation scenarios and the temperature of the IGM
• Quasar H II Regions During Cosmic Reionization
• Cross-correlation studies as a probe of reionization physics