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UID:UW-Physics-Event-6166
DTSTART:20201012T170000Z
DURATION:PT1H0M0S
DTSTAMP:20260415T010648Z
LAST-MODIFIED:20201006T192339Z
LOCATION:Zoom Meeting
SUMMARY:A Novel Theory of Particle Acceleration at Shocks\, Plasma Phy
 sics (Physics/ECE/NE 922) Seminar\, Damiano Caprioli\, Assistant Profe
 ssor University of Chicago
DESCRIPTION:Diffusive shock acceleration (DSA) is a prominent energiza
 tion mechanism involved in the origin of Galactic cosmic rays and in p
 roducing the multi-wavelength emission in astrophysical systems such a
 s novae\, supernova remnants (SNRs)\, and galaxy clusters. <br>
\nI ou
 tline how ab-initio kinetic simulations of non-relativistic shocks hel
 p unraveling the very nature of this process. In particular\, I discus
 s the tension between the standard theory of efficient DSA and the ste
 ep spectra inferred in multi-wavelength observations of SNRs\, stressi
 ng the need to go beyond the canonical prediction that strong shocks p
 roduce particles with energy spectrum ~E^-2\, or harder. Finally\, I i
 ntroduce CRAFT (Cosmic Ray Analytical Fast Tool)\, a quick and versati
 le package for calculating spectra of accelerated particles in non-rel
 ativistic shocks\, along with their radio to gamma-ray non-thermal emi
 ssion.  <br>
\n<br>
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  meeting.<br>
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URL:https://www.physics.wisc.edu/events/?id=6166
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