BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:0
UID:UW-Physics-Event-1666
DTSTART:20091112T220000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T082123Z
LAST-MODIFIED:20091109T150943Z
LOCATION:5310 Chamberlin
SUMMARY:Galactic cosmic ray anisotropy : origin and implications and t
 he role of IceCube\, NPAC (Nuclear/Particle/Astro/Cosmo) Forum\, Paolo
  Desiati\, University of Wisconsin at Madison
DESCRIPTION:The assumed isotropy of galactic cosmic rays has been topi
 c of investigation since the seventies\, when an O(10^-3 - 10^-4) anis
 otropy in arrival direction has been observed for the first time. The 
 wide energy range of this observations (from tens of GeV to hundreds o
 f TeV) has raised questions on the origin of this phenomenon. While we
  can generically claim that the responsible of this anisotropy is to b
 e connected to the structure of the Local Interstellar Medium\, and sp
 ecifically to the Local Interstellar Magnetic Field (within about 0.1-
 1.0 pc ~ 20\,000 - 200\,000 AU)\, we still suffer from the lack of kno
 wledge of the properties of our local environment. Only recently\, wit
 h the observation of O(10-30 degrees) excess of cosmic rays by MILAGRO
  and with the first high statistics observation of the southern sky by
  IceCube\, the topic is gaining renewed attention. The possibility tha
 t the ~100's TeV galactic cosmic ray anisotropy might be connected to 
 the blast from a nearby supernova\, in connection with the anomalies i
 n the observed positron fraction and electron spectrum is very appeali
 ng and will be discussed.
URL:https://www.physics.wisc.edu/events/?id=1666
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