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SÉMINAIRE DU LERMA
OBSERVATOIRE DE PARIS
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LUNDI 4 avril à 11 H


77 avenue Denfert Rochereau, Paris 14



Salle de l'Atelier, Observatoire de Paris





Witnessing the cosmic dawn in 21cm



Andrei MESINGER

Princeton



Résumé : The dawn of the first generations of luminous baryons signaled the beginning of an important epoch in cosmic history. I will sketch-out three likely stages of this extended process, and present the theoretical framework we currently have to support this narrative. I will then discuss the potential of the redshifted 21cm line as a direct probe not only of this epoch of reionization, but also of the dark ages which preceded it. However, to interpret such a bounty of information, we need efficient modeling tools capable of exploring the dauntingly large parameter space and range of scales, such as our newly developed 21cmFAST.