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SUMMARY:The Cosmic Radio Background – Foregrounds to the Epoch of Reioni
 zation - Peter Sims (Cavendish Astrophysics)
DTSTART:20131022T153000Z
DTEND:20131022T163000Z
UID:TALK47456@talks.cam.ac.uk
CONTACT:David Titterington
DESCRIPTION:Study of the Epoch of Reionization (EoR) and the first luminou
 s sources is a field at the forefront of observational cosmology.  Over th
 e coming decade the first experiments to study this missing chapter in the
  early history of the universe will come online and begin making observati
 ons using redshifted 21 cm hyperfine line emission from the neutral hydrog
 en that pervaded the IGM during this epoch.  Detection of this emission on
  top of foregrounds five orders of magnitude greater in intensity will be 
 a significant challenge in requiring precise instrumental calibration\, an
 d accurate characterisation and subtraction of the foreground sources.  Th
 is talk will describe aspects of the ongoing effort to model multiple comp
 onents of the EoR foreground and the related task of uncovering the origin
 s of the significant excess emission found by the ARCADE2 experiment.\n
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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