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This Week at Physics

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Event Number 3328

  Thursday, March 27th, 2014

Faculty Candidate Seminar
Radar Detection of HE Neutrinos in the Ice
Time: 1:30 pm
Place: 5280 Chamberlin Hall
Speaker: Kael Hanson, Université Libre de Bruxelles
Abstract: The recent IceCube measurement of an excess of neutrino events in the energy range of 30 TeV to 2 PeV is an extremely interesting result which points to the existence of a detectible neutrino signal from diffuse galactic and extragalactic cosmic ray acceleration sites. The limited data is most compatible with a power law flux with spectral index near -2, consistent with production via Fermi shock acceleration, however the limited dynamic range of the measurement renders a large error in the determination of the behavior of the energy spectrum and future accumulation of statistics in IceCube above a PeV will come slowly. Extensions to the IceCube optical detector array are being designed to increase the effective area by an order of magnitude. Antenna arrays for the detection of extremely high energy neutrinos by their radio emission are also being designed and built, however these facilities would not detect a significant number of neutrinos of this origin but are rather targeted toward the much higher energy cosmogenic neutrino fluxes. This presentation will explore the possibility of detection of PeV scale energy and higher neutrinos using bistatic radars which reflect off of plasmas created in the energetic electromagnetic neutrino-induced cascades in the ice.
Host: Joynt/Halzen
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