ASTRAEUS: Semi-analytical semi-numerical galaxy evolution and reionization code

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Ada Coda
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ASTRAEUS: Semi-analytical semi-numerical galaxy evolution and reionization code

Post by Ada Coda » Fri May 01, 2020 1:48 am

ASTRAEUS: Semi-analytical semi-numerical galaxy evolution and reionization code

Abstract: ASTRAEUS (semi-numerical rAdiative tranSfer coupling of galaxy formaTion and Reionization in n-body dArk mattEr simUlationS) self-consistently derives the evolution of galaxies and the reionization of the IGM based on the merger trees and density fields of a DM-only N-body simulation. It models gas accretion, star formation, SN feedback, the time and spatial evolution of the ionized regions, accounting for recombinations, HI fractions and photoionization rates within ionized regions, and radiative feedback. ASTRAEUS is for studying the galaxy-reionization interplay in the first billion years. The underlying code is written in C and is MPI-parallelized; its modular design allows new physical processes and galaxy properties to be added easily. ASTRAEUS can be run on a tree-branch-by-tree-branch basis (<i>i.e.,</i> fully vertical) or on a redshift-by-redshift basis (<i>i.e.,</i> fully horizontal) when evolving the galaxies by using local horizontal merger trees.

Credit: Hutter, Anne; Legrand, Laurent; Ucci, Graziano

Site: https://github.com/annehutter/astraeus
https://ui.adsabs.harvard.edu/abs/2020arXiv200408401H


Preferred citation method: https://ui.adsabs.harvard.edu/abs/2020arXiv200408401H

ID: ascl:2004.006
Last edited by Ada Coda on Fri May 01, 2020 1:49 am, edited 1 time in total.
Reason: Updated code entry.

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