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CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:3
UID:UW-Physics-Event-6397
DTSTART:20210401T193000Z
DTEND:20210401T203000Z
DTSTAMP:20260414T233858Z
LAST-MODIFIED:20210331T215057Z
LOCATION:https://uwmadison.zoom.us/j/98067935258?pwd=SEpreVRFTFMvUGxlM
 0tJaHo4MWdvdz09
SUMMARY:New results from the Hydrogen Epoch of Reionization Array\, NP
 AC (Nuclear/Particle/Astro/Cosmo) Forum\, Danny Jacobs\, Arizona State
  University
DESCRIPTION:Observations of the 21cm hydrogen line in the early univer
 se (redshifts 25 to 5) are expected to shed light on the origins of st
 ars\,  inflation\, and dark matter. First generation interferometers h
 ave placed ever-lower limits on the fluctuation power spectrum and the
  EDGES experiment has reported a potential global absorption trough at
  redshift 18. The Hydrogen Epoch of Reionization Array (HERA) is a sec
 ond generation instrument which aims for a high significance power spe
 ctrum measurement between redshifts 5.5 and 12 and experimental observ
 ations to redshift 18. In 2016 HERA was operated with 20% of its colle
 cting area. This data has been used to develop a pipeline which has pr
 oduced what is currently the lowest power spectrum upper limit. I will
  report on these results and describe our upgrade campaign for the ful
 l array aimed at lowering systematic floors and expanding the redshift
  range to 25.<br>
\n<br>
\nThe speaker will be available for one-on-on
 e meetings on Monday April 5 - Weds April 7.  If you would like to mee
 t with the speaker\, please contact Peter Timbie pttimbie@wisc.edu to 
 set up an appointment.
URL:https://www.physics.wisc.edu/events/?id=6397
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