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Preliminary Exam
Investigating Potential Time Dependence in the Cosmic Ray Anisotropy
Date: Thursday, December 5th
Time: 2:30 pm - 4:30 pm
Place: B343 Sterling Hall
Speaker: Perri Zilberman, Physics PhD Graduate Student
Abstract: The cosmic ray flux has been found to be nearly isotropic on the sky, however a significant and robust anisotropy has been found by IceCube as well as a number of other experiments. This anisotropy is likely in part caused by cosmic rays interacting with the magnetic field of the heliosphere. The heliosphere is dynamic, largely due to changes in solar activity. This suggests that the Cosmic Ray Anisotropy should similarly vary in time, in step with the heliosphere, though there is not a consistent picture of how such a time variation would present itself observationally. Considering this, we present a model-independent method to test for time variation in the Cosmic Ray Anisotropy. This method is then validated using a sample of data from the IceCube Neutrino Observatory.
Host: Albrecht Karle
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