Speaker
Description
IceCube is a cubic kilometer scale, deep-ice Cherenkov neutrino
detector at the South Pole. IceCube’s cosmic neutrino searches cover
an energy region all the way from below TeV to EeV and higher. In the
EeV energy region, a flux of 'cosmogenic' neutrinos generated by
interactions of ultra-high energy cosmic rays on intervening radiatio
backgrounds is expected. We have analysed 7 years of IceCube data with
the highest sensitivity to date to neutrinos of energy between 10 PeV
and 10 EeV. This provides insights into the sources and nature of
UHECRs since the “guaranteed” cosmogenic neutrino flux depends in fact
on parameters such as the redshift evolution of the UHECR sources, the
energy at which UHECRs transit from Galactic to extragalactic, and most
importantly, the mass composition of UHECRs. In this talk, results from
the cosmogenic neutrino search with IceCube will be presented and their
implications discussed.
| Presentation type | oral |
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