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BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-4350
DTSTART:20161201T203000Z
DURATION:PT1H0M0S
DTSTAMP:20240319T121523Z
LAST-MODIFIED:20161121T160947Z
LOCATION:5280 Chamberlin hall
SUMMARY:STUDIES OF GALACTIC COSMIC RAYS WITH DIRECT AND INDIRECT MEASU
REMENTS\, NPAC (Nuclear/Particle/Astro/Cosmo) Forum\, Nahee Park\, Uni
versity of Chicago
DESCRIPTION:Cosmic rays\, high energy particles originating from outsi
de of the solar system\, are believed to be dominated by particles fro
m our Galaxy at least up to the energy of 10^15 eV. Recent results fro
m direct measurements of cosmic rays\, including the rise of the posit
ron flux\, the hardening of the light nuclei\, and the different spect
ral indexes of the proton and helium spectra\, challenge the classical
models of the Galactic cosmic rays. Meanwhile\, the development of ga
mma-ray experiments has opened a new window to study the acceleration
and propagation of high-energy particles in the vicinity of the source
sites\, such as supernova remnants.
\n
\nI will present the G
alactic gamma-ray measurements from the VERITAS experiment\, an imagin
g atmospheric Cherenkov telescope measuring gamma rays with energies h
igher than 85 GeV and up to ~ 30 TeV. Focusing on the supernova remnan
ts\, I will discuss what we have learned about the acceleration of hig
h-energy particles with gamma-ray observations. I will also introduce
the near-future balloon-borne experiment\, HELIX (High Energy Light Is
otope eXperiment)\, which is designed to measure the clock isotope 10^
Be up to 10 GeV/n to study the propagation of Galactic cosmic rays. Fi
nally\, I will highlight how measurements from different disciplines\,
such as cosmic-ray and gamma-ray astrophysics\, will broaden our pers
pectives on high-energy particles and advance us towards a new paradig
m of Galactic cosmic rays.
URL:https://www.physics.wisc.edu/events/?id=4350
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