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PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:4
UID:UW-Physics-Event-8939
DTSTART:20241010T193000Z
DTEND:20241010T203000Z
DTSTAMP:20260408T014844Z
LAST-MODIFIED:20241010T191815Z
LOCATION:Chamberlin 5280 / https://uwmadison.zoom.us/j/99752833142?pwd
 =39NdrnvNDBQTzxn1YlStFno1Wa4jN3.1
SUMMARY:A stress test of Galactic cosmic rays\, NPAC (Nuclear/Particle
 /Astro/Cosmo) Forum\, Philipp Mertsch\, RWTH Aachen University
DESCRIPTION:The Galaxy is pervaded by a flux of high-energy\, non-ther
 mal particles: cosmic rays. The last years have seen great progress to
 wards elucidating the century-old questions of cosmic ray origin. Yet\
 , a number of anomalies point to more complex dynamics than previously
  thought. With new and upcoming data\, we are in a position to put som
 e stress on the standard picture of cosmic rays and address some of th
 e fundamental questions: What is the energy of transition from Galacti
 c to extra-Galactic sources? How is magnetised turbulence shaping the 
 spectra and anisotropies of cosmic rays? And what is the feedback of c
 osmic rays on their environments?
\n
\n
\nIn this talk\, I will descri
 be some of our recent works in that direction. Diffuse emission in hig
 h-energy gamma-rays and neutrinos\, as measured by experiments like Ic
 eCube at the South Pole\, is a great tool for studying cosmic rays els
 ewhere in the Galaxy. We have recently provided new predictions for ga
 mma-rays and neutrinos\, including properly evaluated model uncertaint
 ies. I will address the need for better gas maps and explain how we us
 ed Bayesian inference in producing the highest resolution 3D maps of a
 tomic and molecular hydrogen in the Galaxy to date.
URL:https://www.physics.wisc.edu/events/?id=8939
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