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RECAP - Unravelling the complexity of the reionization history though simulations and multi-wavelength observations

Abstract: The epoch of Reionization marks the last major transition of the Universe: approximately 400.000 year after the Big bang, the neutral intergalactic medium, mainly composed of hydrogen atoms, started to be ionized by high-energy radiation from the first cosmic sources, stars, galaxies. The onset, timeline and topology of the Reionization process are all tightly linked to the nature of the sources of ionizing radiation: by identifying and studying them we can gain fundamental insights into what shaped the evolution of the universe, from the smooth matter distribution of early times, as revealed by the CMB, to the wealth of structures, like galaxies and clusters of galaxies that formed at later epochs. Our project will exploit the critical synergies in expertise of the 4 PIs and their teams, from the modeling of the intergalactic medium ionization and metal enrichment, to detailed observations of the ionizing sources, to shed light on their properties, their environment and the complex energy and baryon exchange between them and the intergalactic medium. We will exploit new extensive datasets coming from state-of-the-art facilities, such as the recently launched JWST, present and future VLT instrumentation and ALMA. To support and drive the interpretation of these new observations, we will develop a novel algorithm to model a self-consistent non-equilibrium 3D multi-frequency radiative transfer through H, He, metals and dust and produce both large scale and zoomed-in simulations that can be readily compared to real data. The proposed research aims at making fundamental steps to decode the mysteries of Cosmic Dawn and solve some of the puzzles in our current theories of early galaxy formation.

EU emblem RECAP has received funding from the European Union's Horizon Europe research and innovation programme under grant agreement No 101166930.

Struttura INAF OA Roma e OA Trieste

Bando: ERC-2024-SyG

Riferimento contratto n. 101166930

Inizio: 01/07/2025

Durata: 72 mesi

Coordinamento: INAF

PI INAF: Laura Pentericci

CoPI INAF: Valentina D'Odorico

Partner:

MAX-PLANCK-GESELLSCHAFT ZUR FORDERUNG DER WISSENSCHAFTEN EV (DE)

CHALMERS TEKNISKA HOGSKOLA AB (SE)

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L’intesa nazionale, che coinvolge otto atenei e centri di ricerca, nasce per promuovere le eccellenze italiane nel campo delle tecnologie quantistiche, grazie a un ecosistema coeso, capace di competere a livello internazionale, in linea con la nuova strategia italiana per le scienze e tecnologie quantistiche

L’intesa nazionale, che coinvolge otto atenei e centri di ricerca, nasce per promuovere le eccellenze italiane nel campo delle tecnologie quantistiche, grazie a un ecosistema coeso, capace di competere a livello internazionale, in linea con la nuova strategia italiana per le scienze e tecnologie quantistiche

A tagliare il nastro il Rettore dell'Università di Camerino Graziano Leoni ed il Presidente dell'Istituto Nazionale di Astrofisica Roberto Ragazzoni

A tagliare il nastro il Rettore dell'Università di Camerino Graziano Leoni ed il Presidente dell'Istituto Nazionale di Astrofisica Roberto Ragazzoni