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

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 halos, the latter have a stronger dependence on the supernovae feedback parameters, and both are affected by the escape fraction model.

arXiv commentMNRAS accepted

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Cited by in corpus (9)

• Modeling the JWST high-redshift galaxies with a general formation scenario and the consistency with the $\Lambda$CDM model
• Measuring the reionization optical depth without large-scale CMB polarization
• Gravitational waves from mergers of Population III binary black holes: roles played by two evolution channels
• Constraints on the state of the IGM at $z\sim 8-10$ using redshifted 21-cm observations with LOFAR
• 21cmFirstCLASS II. Early linear fluctuations of the 21cm signal
• Probing the intergalactic medium during the Epoch of Reionization using 21-cm signal power spectra
• Fisher matrix forecasts on the astrophysics of galaxies during the epoch of reionisation from the 21-cm power spectra
• Constraints on the galaxy formation models during epoch of reionization with high redshift observations
• POLAR-II: modeling star formation history of galaxies on the 21-cm signal from Epoch of Reionization