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SUMMARY:Unravelling the story of cosmic reionization: learning from high-r
 edshift Lyman continuum emitters
DTSTART:20260617T113000Z
DTEND:20260617T123000Z
DTSTAMP:20260617T193400Z
UID:indico-event-9701@indico.fysik.su.se
DESCRIPTION:Speakers: Ilias Goovaerts (JHU/STScI\, MD USA)\n\nThe epoch of
  cosmic reionisation was the last phase transition the Universe underwent\
 , changing all the hydrogen in the intergalactic medium from neutral to io
 nized. This transition had fundamental impacts on galaxy evolution\, as we
 ll as being the era during which the first galaxies were formed. Significa
 nt open questions remain on how this change happened\, and which ionising 
 sources were responsible. Given the huge advances made by JWST into the un
 derstanding of galaxies during this epoch\, resolving the growth of these 
 galaxies with their impact on the intergalactic medium remains a central e
 ffort of modern astrophysics.\nI will give an overview of reionisation\, o
 ur current understanding of how galaxies impacted this process and what is
  still unknown. I will focus on the recent efforts to build samples of hig
 h-redshift Lyman continuum emitters — galaxies that emit ionising photon
 s — and what we can learn from the most extreme\, and high-redshift emit
 ters detected to date. I’ll present new results on Ion3 and MXDFz4.4\, t
 he highest redshift directly-detected Lyman continuum emitters and discuss
  what these galaxies tell us about how early ionising sources shaped their
  environment. I’ll discuss their place in the hunt to understand ionisin
 g emission at the highest redshifts possible and how these extreme galaxie
 s may be different to low-redshift analogues.\nFinally I’ll discuss ongo
 ing and future efforts to detect and characterise ionizing emission\, rang
 ing from crucial work in HST’s final years (hopefully still many!) to tr
 ansformative advances targeted with the next generation of 30+ meter class
  ground-based telescopes such as the ELT\, and the forthcoming Habitable W
 orlds Observatory.\n\nhttps://indico.fysik.su.se/event/9701/
LOCATION:FC61 (AlbaNova Main Building)
URL:https://indico.fysik.su.se/event/9701/
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