Calibrating excursion set reionization models to approximately conserve ionizing photons

Park, Jaehong; Greig, Bradley; Mesinger, Andrei

doi:10.48550/arxiv.2112.05184

Cited by 2 publications

(2 citation statements)

References 67 publications

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“…One of the most undesirable features of excursion set-based algorithms is that they do not explicitly conserve photonswhen two H II bubbles overlap, LyC photons from both bubbles are double-counted in setting the ionization field (Zahn et al 2011;Paranjape et al 2016;Hutter 2018). The 21cmFAST code includes a special correction to overcome this deficiency (Park et al 2022). The latest version of the code is described in Murray et al (2020).…”

Section: Cmfastmentioning

confidence: 99%

Modeling cosmic reionization

Gnedin

Madau

2022

Living Rev Comput Astrophys

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The transformation of cold neutral intergalactic hydrogen into a highly ionized warm plasma marks the end of the cosmic dark ages and the beginning of the age of galaxies. The details of this process reflect the nature of the early sources of radiation and heat, the statistical characteristics of the large-scale structure of the Universe, the thermodynamics and chemistry of cosmic baryons, and the histories of star formation and black hole accretion. A number of massive data sets from new ground- and space-based instruments and facilities over the next decade are poised to revolutionize our understanding of primeval galaxies, the reionization photon budget, the physics of the intergalactic medium (IGM), and the fine-grained properties of hydrogen gas in the “cosmic web”. In this review, we survey the physics and key aspects of reionization-era modeling and describe the diverse range of computational techniques and tools currently available in this field.

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Section: Cmfastmentioning

confidence: 99%

Modeling cosmic reionization

Gnedin

Madau

2022

Living Rev Comput Astrophys

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“…One of the most undesirable features of excursion set-based algorithms is that they do not explicitly conserve photons -when two H II bubbles overlap, LyC photons from both bubbles are double-counted in setting the ionization field (Zahn et al, 2011;Paranjape et al, 2016;Hutter, 2018). The 21cmFAST code includes a special correction to overcome this deficiency (Park et al, 2021). The latest version of the code is described in Murray et al (2020).…”

Section: Cmfastmentioning

confidence: 99%

Modeling Cosmic Reionization

Gnedin¹,

Madau²

2022

Preprint

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The transformation of cold neutral intergalactic hydrogen into a highly ionized warm plasma marks the end of the cosmic dark ages and the beginning of the age of galaxies. The details of this process reflect the nature of the early sources of radiation and heat, the statistical characteristics of the large-scale structure of the Universe, the thermodynamics and chemistry of cosmic baryons, and the histories of star formation and black hole accretion. A number of massive data sets from new ground-and space-based instruments and facilities over the next decade are poised to revolutionize our understanding of primeval galaxies, the reionization photon budget, the physics of the intergalactic medium (IGM), and the fine-grained properties of hydrogen gas in the "cosmic web". In this review we survey the physics and key aspects of reionization-era modeling and describe the diverse range of computational techniques and tools currently available in this field.

show abstract

Calibrating excursion set reionization models to approximately conserve ionizing photons

Cited by 2 publications

References 67 publications

Modeling cosmic reionization

Modeling cosmic reionization

Modeling Cosmic Reionization

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