Speaker
Dr
Peter Denton
(Niels Bohr International Academy)
Description
High energy neutrinos have been detected by IceCube, but their origin remains a mystery. Determining the sources of this flux is a crucial first step towards multi-messenger studies. In this work we systematically compare two classes of sources with the data: galactic and extragalactic. We build a likelihood function on an event by event basis including energy, event topology, absorption, and direction information. We present the probability that each high energy event with deposited energy $E_{\rm dep}>60$ TeV in the HESE sample is galactic, extragalactic, or background. The galactic fraction of the astrophysical flux has a best fit value of $0.07^{+0.09}_{-0.06}$ and zero galactic flux is allowed at $1.2\sigma$.
Primary author
Dr
Peter Denton
(Niels Bohr International Academy)
Co-authors
Prof.
Danny Marfatia
(University of Hawaii at Manoa)
Prof.
Thomas Weiler
(Vanderbilt University)
