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PRODID:UW-Madison-Physics-Events
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SEQUENCE:1
UID:UW-Physics-Event-5310
DTSTART:20200204T213000Z
DURATION:PT1H0M0S
DTSTAMP:20260312T013719Z
LAST-MODIFIED:20200130T145317Z
LOCATION:Room 4274\, Chamberlin
SUMMARY:Disentangling a century-old mystery: a path to unveiling the o
 rigins of the ultra-high-energy Universe\, NPAC (Nuclear/Particle/Astr
 o/Cosmo) Forum\, Lu Lu
DESCRIPTION:The highest-energy particles discovered in Nature are ultr
 a-high-energy cosmic rays (UHECR). They carry energies orders of magni
 tude higher than that reached by man-made accelerators. Technological 
 advances in the past thirty  years have enabled us to precisely charac
 terize the flux\, composition\, and arrival directions of UHECR. The P
 ierre Auger Observatory\, the largest cosmic-ray experiment on Earth\,
  is an observatory dedicated to the study of UHECR by detecting air sh
 owers produced in Earth's atmosphere. Additionally\, the cubic-kilomet
 er IceCube Neutrino Observatory has discovered  a diffuse  flux  of  h
 igh-energy  astrophysical neutrinos at PeV energies. However\, the ori
 gins of UHECR remain an enduring mystery\, and their connections with 
 IceCube neutrinos remain unclear. In this talk\, I will review the sta
 te-of-the-art for our understanding of the UHE Universe and propose a 
 road map that combines measurements from Pierre Auger\, IceCube and ot
 her multi-messenger partners\, utilizing data of UHE photons and astro
 physical neutrinos\, for the detection of the first possible UHE sourc
 e.
URL:https://www.physics.wisc.edu/events/?id=5310
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