BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Detecting the sky-averaged 21-cm line from atomic Hydrogen - Eloy 
 de Lera Acedo - The Cavendish Laboratory
DTSTART:20220131T130000Z
DTEND:20220131T140000Z
UID:TALK168680@talks.cam.ac.uk
CONTACT:Dongwon Han
DESCRIPTION:In this talk\, I will present our current efforts to detect th
 e elusive 21-cm line from atomic Hydrogen. With the promise of opening a n
 ew window to studies of the early Universe: Dark Ages\, Cosmic Dawn\, Epoc
 h of Re-ionziation\, the so-called 21-cm signal (originating at 21-cm wave
 length and redshifted to a few m) is still to be detected. Here in Cambrid
 ge we lead the Radio Experiment for the Analysis of Cosmic Hydrogen (REACH
 )\, a sky-averaged radiometer experiment aiming at a confident detection o
 f the 21-cm line by tackling some of the main challenges faced bye today
 ’s instruments. These are the calibration of the foregrounds (5 orders o
 f magnitude brighter than the expected cosmological signal) and the calibr
 ation of instrumental effects (the cause of much of the bottlenecks found 
 by current telescopes). I will discuss how REACH aims at either confirming
  or disproving the observations published by EDGES in 2018 and to improve 
 on the current best upper limits from the SARAS monopole experiment. At th
 e end of the talk I will discuss our plans to move to space in the future\
 , to the quietest observation location in the Solar system: in orbit at th
 e far-side of the Moon\, and why that could be a game changer for this typ
 e of experiments
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
END:VEVENT
END:VCALENDAR