Cosmic Lighthouses : Unveiling the nature of high-redshift galaxies
Pratika Dayal

TL;DR
This paper combines advanced cosmological simulations with models of high-redshift galaxies to better understand the epoch of reionization, galaxy evolution, and the properties of Lyman Alpha Emitters, aiding future astronomical observations.
Contribution
It introduces a self-consistent model for LAEs integrated with cosmological simulations to analyze their physical properties and predict their observability with upcoming telescopes.
Findings
LAEs' properties are significantly influenced by IGM ionization, dust, and velocities.
Constraints on early galaxy contributions to reionization are established.
Predictions for LAE detectability with JWST and ALMA are provided.
Abstract
We are in the golden age for the search for high-redshift galaxies, made possible by a combination of new instruments and innovative search techniques. One of the major aims of such searches is to constrain the epoch of reionization (EoR), which marks the second major change in the ionization state of the Universe. Understanding the EoR is difficult since whilst it is galaxy evolution which drives reionization, reionization itself influences galaxy evolution through feedback effects. Unraveling the interplay of reionization and galaxy evolution is further complicated by of a lack of understanding of the metal enrichment and dust distribution in high redshift galaxies. To this end, a class of galaxies called Lyman Alpha Emitters (LAEs) have been gaining enormous popularity as probes of all these three processes. In this thesis, we couple state of the art cosmological SPH simulations…
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Taxonomy
TopicsAstronomy and Astrophysical Research
