POLAR - I: linking the 21-cm signal from the epoch of reionization to galaxy formation

Qing Bo Ma; Raghunath Ghara; Benedetta Ciardi; Ilian T. Iliev; Léon V.E. Koopmans; Garrelt Mellema; Rajesh Mondal; Saleem Zaroubi

doi:10.1093/mnras/stad1203

POLAR - I: linking the 21-cm signal from the epoch of reionization to galaxy formation

Qing Bo Ma, Raghunath Ghara, Benedetta Ciardi, Ilian T. Iliev, Léon V.E. Koopmans, Garrelt Mellema, Rajesh Mondal, Saleem Zaroubi

Physics

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Abstract

To self-consistently model galactic properties, reionization of the intergalactic medium, and the associated 21-cm signal, we have developed the algorithm POLAR by integrating the one-dimensional radiative transfer code GRIZZLY with the semi-analytical galaxy formation code L-GALAXIES 2020. Our proof-of-concept results are consistent with observations of the star formation rate history, UV luminosity function, and the CMB Thomson scattering optical depth. We then investigate how different galaxy formation models affect UV luminosity functions and 21-cm power spectra, and find that while the former are most sensitive to the parameters describing the merger of haloes, the latter have a stronger dependence on the supernovae feedback parameters, and both are affected by the escape fraction model.

Original language	English
Pages (from-to)	3284-3297
Number of pages	14
Journal	Monthly Notices of the Royal Astronomical Society
Volume	522
Issue number	3
DOIs	https://doi.org/10.1093/mnras/stad1203
State	Published - 1 Jul 2023

Bibliographical note

Publisher Copyright:
© 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.

Keywords

dark ages, reionization, first stars
galaxies: formation
methods: numerical

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10.1093/mnras/stad1203

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abstract = "To self-consistently model galactic properties, reionization of the intergalactic medium, and the associated 21-cm signal, we have developed the algorithm POLAR by integrating the one-dimensional radiative transfer code GRIZZLY with the semi-analytical galaxy formation code L-GALAXIES 2020. Our proof-of-concept results are consistent with observations of the star formation rate history, UV luminosity function, and the CMB Thomson scattering optical depth. We then investigate how different galaxy formation models affect UV luminosity functions and 21-cm power spectra, and find that while the former are most sensitive to the parameters describing the merger of haloes, the latter have a stronger dependence on the supernovae feedback parameters, and both are affected by the escape fraction model.",

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doi = "10.1093/mnras/stad1203",

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T2 - linking the 21-cm signal from the epoch of reionization to galaxy formation

AU - Ma, Qing Bo

AU - Ghara, Raghunath

AU - Ciardi, Benedetta

AU - Iliev, Ilian T.

AU - Koopmans, Léon V.E.

AU - Mellema, Garrelt

AU - Mondal, Rajesh

AU - Zaroubi, Saleem

PY - 2023/7/1

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N2 - To self-consistently model galactic properties, reionization of the intergalactic medium, and the associated 21-cm signal, we have developed the algorithm POLAR by integrating the one-dimensional radiative transfer code GRIZZLY with the semi-analytical galaxy formation code L-GALAXIES 2020. Our proof-of-concept results are consistent with observations of the star formation rate history, UV luminosity function, and the CMB Thomson scattering optical depth. We then investigate how different galaxy formation models affect UV luminosity functions and 21-cm power spectra, and find that while the former are most sensitive to the parameters describing the merger of haloes, the latter have a stronger dependence on the supernovae feedback parameters, and both are affected by the escape fraction model.

AB - To self-consistently model galactic properties, reionization of the intergalactic medium, and the associated 21-cm signal, we have developed the algorithm POLAR by integrating the one-dimensional radiative transfer code GRIZZLY with the semi-analytical galaxy formation code L-GALAXIES 2020. Our proof-of-concept results are consistent with observations of the star formation rate history, UV luminosity function, and the CMB Thomson scattering optical depth. We then investigate how different galaxy formation models affect UV luminosity functions and 21-cm power spectra, and find that while the former are most sensitive to the parameters describing the merger of haloes, the latter have a stronger dependence on the supernovae feedback parameters, and both are affected by the escape fraction model.

KW - dark ages, reionization, first stars

KW - galaxies: formation

KW - methods: numerical

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IS - 3

ER -

POLAR - I: linking the 21-cm signal from the epoch of reionization to galaxy formation

Abstract

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Keywords

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