Multi-scales analysis of the reionization process in numerical simulations
type: Distribution
access URL: https://theses.hal.science/tel-00985573
format: HTML
issued: 2026-05-05T12:33:58.383324
modified: 2026-05-05T12:33:58.358465

Multi-scales analysis of the reionization process in numerical simulations
type: Dataset
contact point: Organization
  fn: CCSD
keyword: theorie
keyword: reionization
keyword: calcul-haute-performance
keyword: sduothersciences-of-the-universe-physicsother
keyword: cosmologie
keyword: methodes-numeriques
keyword: simulation
keyword: reionisation
keyword: regions-hii
keyword: cosmology
keyword: theses
keyword: astrophysics
keyword: infoeu-reposemanticsdoctoralthesis
keyword: astrophysique
landing page: https://theses.hal.science/tel-00985573
description: The reionization period is a major step in the history of the Universe that change its ionization state. The increasing progress in high performance computing, allows us to model the phenomenon. Usually, the simulation analyses focus on global properties to constrain the impact of the physic put in the simulations. Alternately, I implemented a method of analysis that apprehend theglobal reionization in terms of multiple ‘local reionizations’. I extracted a merger tree of HII regions from the simulations to characterize the reionization process. I applied the technique in several cosmological simulations, where different ionizing source models were tested to investigate the impact of the source model on the reionization chrono-morphology. I also used the merger tree to characterize the past reionization history of MW type galaxies. I finally applied this methodology in Local Group simulations to quantify the reionization hystory of MW and M31.
identifier: NNT: 2013STRAH008
issued: 2026-05-05T12:33:58.374182
language: fr
modified: 2026-05-05T12:33:58.374187

test_moissonnage_selune
type: Agent