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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-8236
DTSTART:20230403T170000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T053000Z
LAST-MODIFIED:20230326T170757Z
LOCATION:2241 Chamberlin Hall
SUMMARY:Cosmic Ray Transport Theory in light of Milky Way Data\, Plasm
 a Physics (Physics/ECE/NE 922) Seminar\, Philipp Kempski\, Princeton U
 niversity
DESCRIPTION:Relativistic cosmic rays (CRs) may play an important role 
 in the evolution of galaxies and clusters by driving galactic winds an
 d heating diffuse gas. As a result\, “CR feedback” has become a ke
 y ingredient in galaxy evolution models. However\, a fundamental limit
 ation of these models is that the nature of CR feedback is a very stro
 ng function of the assumed CR transport. Getting a better handle on th
 e microphysics of CR propagation is therefore essential for understand
 ing the macrophysics of CR feedback in galaxies. In this talk\, I will
  discuss theoretical models of CR propagation and how CR spectra measu
 red at Earth help us constrain their transport physics. I will show th
 at existing theories of CR transport remain uncertain and are generall
 y not in good agreement with local observations\, which suggests that 
 there may be a significant theoretical gap in our understanding of CR 
 propagation.
URL:https://www.physics.wisc.edu/events/?id=8236
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