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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-1517
DTSTART:20090427T203000Z
DTEND:20090427T220000Z
DTSTAMP:20260414T220125Z
LAST-MODIFIED:20090421T182231Z
LOCATION:4534 Sterling Hall
SUMMARY:Cosmic Rays emission from active and non-active Galaxies\, Spe
 cial Astronomy Colloquium\, Dr. Julia Becker\, Physics Institute\, Got
 henberg University Sweden
DESCRIPTION:High-energy Cosmic Rays hit the Earth's atmosphere every d
 ay\, with<br>
\nenergies of 1e9 up to more than 1e20 eV per particle. 
 Still after almost 100 years of their discovery\, the exact origin is 
 still unknown as magnetic fields scramble the direction of Cosmic Rays
 . In this talk\, Cosmic Ray acceleration sites in starburst and active
  galaxies are discussed. In addition\, estimates of the high-energy ph
 oton and neutrino fluxes arising from Cosmic Ray interactions in the s
 ources are presented. These neutral particles lead right to their prod
 uction sites and can therefore be used to identify the sources of high
 -energy Cosmic Rays. 
URL:https://www.physics.wisc.edu/events/?id=1517
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