Seminar Series

A New Window on the Universe – Investigating Cosmic Ray Sources with the IceCube Neutrino Observatory

Speaker

Mark Aartsen Research Associate with Assoc. Prof Jenni Adams group, Physics & Astronomy, University of Canterbury

Institute

Time & Place

Fri, 17 Mar 2017 11:00:00 NZDT in Rutherford 531, Level 5

All are welcome

Abstract

Cosmic Ray science began over 100 years ago, yet it is only in recent years that the origins of these mysterious particles from space have begun to be associated with confirmed sources. Neutrinos, as a byproduct of Cosmic Ray interactions, could be the key to bringing the sources into focus.

The IceCube Neutrino Observatory has confirmed the existence of astrophysical neutrinos above our backgrounds both through IceCube's contained event sample and the distribution of up-going muon neutrinos which have passed through the Earth. The hunt for the sources of these neutrinos however has only just begun, and characterising the astrophysical neutrino flux means looking at every avenue the IceCube detector can offer.

I will discuss IceCube's methodology for finding point sources of neutrinos along with a summary of the most recent results on point sources, and discuss my own investigation into improving the point source analysis for the high energy starting event sample.

I will also give an overview of our current investigation into detecting more events within IceCube by using the IceTop surface array as a means to reject Cosmic Rays that interact in the atmosphere above IceCube and make background light in the detector below.