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SUMMARY:Finding the first galaxies with a magnifying GLASS - Tommaso Treu 
 (UCLA)
DTSTART:20141016T153000Z
DTEND:20141016T163000Z
UID:TALK55145@talks.cam.ac.uk
CONTACT:Simon Hodgkin
DESCRIPTION:How and when did galaxies reionize the universe (if they did)?
  I will\npresent recent observational results from two projects aimed at\n
 answering this question by finding and characterizing the first\ngalaxies.
  The first project (BORG) aims to find the brightest galaxy\ncandidates ab
 ove z=7\, most suitable for spectroscopic follow-up. The second project (G
 LASS) exploits the magnifying power of foreground clusters of galaxies and
  the spectroscopic capabilities of HST to measure spectra of galaxies from
  the epoch of cosmic reionization to z=0.5. I will summarize some highligh
 ts and their implications for our understanding of the sources of reioniza
 tion. If there is time\, I will describe a new technique to measure black 
 holes masses at cosmological redshifts\, thus providing insights into an a
 lternative potential source of reionizing photons.
LOCATION:Sackler Lecture Theatre\, IoA (tea at 4:00 pm)
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