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Symposium S1
29-30 June 2022
The Universe at the reionization epoch
News: The detailed programme is now available clicking on the "Interactive Programme" tab on the main page. Aims and scopeThe Reionization of the Universe is the latest change of phase that the Universe underwent when it was only a few hundreds of million years old. So far we do not understand yet which sources produced the reionization, with an open debate about the relative role of UV luminous vs. UV weak galaxies, nor how long it took. All we seem to agree on is that the reionization was mostly completed by around z ~ 6, though some large neutral regions could have survived longer. However there are many questions that we do not understand yet, like the role of AGN, if any at this time, or the ionizing luminosity escape fraction of galaxies, which determines directly the pace of the reionization. Some questions could be answered by identifying proxies at lower redshifts of the galaxies that produced the reionization. On the other hand, the identification of Lyman alpha emitters before the end of the reionization shows that many of these sources seem to have produced individual ionized bubbles, large enough to allow the escape of Lyman alpha photons not affected by scattering on the Inter Galactic Medium. Are these bubbles the seeds that through percolation completed the reionization of the universe by z~6? How was the reionization produced? Which are the factors to take into account when studying the reionization? Programme
Wednesday June 29th
Indirect tracers of LyC escape, z~3 leakers
Invited speakers
Scientific organisers
Anne Verhamme (UniGe) Geneva (co-Chair) Contact
SOC co-chairs: Updated on Wed Jun 15 14:12:40 CEST 2022
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European Astronomical Society |