1. POLAR - I
- Author
-
Qing-Bo Ma, Raghunath Ghara, Benedetta Ciardi, Ilian T Iliev, Léon V E Koopmans, Garrelt Mellema, Rajesh Mondal, and Saleem Zaroubi
- Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,Space and Planetary Science ,Astrophysics of Galaxies (astro-ph.GA) ,first stars ,FOS: Physical sciences ,reionization ,galaxies: formation ,Astronomy and Astrophysics ,dark ages ,Astrophysics - Astrophysics of Galaxies ,Astrophysics - Cosmology and Nongalactic Astrophysics ,methods: numerical - 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., Comment: MNRAS accepted
- Published
- 2023