Speaker
Description
The origin of the diffuse TeV-PeV neutrino flux observed by IceCube is largely unknown. To help decipher its astrophysical origin, we propose an IceCube analysis that conducts follow-up searches for GeV neutrinos associated with neutrino events above 60 TeV, which are known to have a high probability to be of astrophysical origin. This effort aligns with one of IceCube’s current priorities to associate lower-energy data with astrophysical neutrino candidates. It could not only identify a new component of the astrophysical neutrino flux, but help to characterize how its spectrum extrapolates from GeV to PeV energies. This would in turn give valuable insights into the internal processes of neutrino sources. Astrophysical transients, such as collapsars have been proposed as sources of time correlated GeV- and high-energy neutrinos. Conducting this search in such short time scales allows for a substantial reduction in the dominant background rate for GeV neutrino candidate events. We introduce the statistical method and sensitivity of this search as well as the data quality checks to be performed.
| Collaboration(s) | IceCube |
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