Würzburg 2018 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 44: Experimentelle Methoden der Astroteilchenphysik II
T 44.10: Vortrag
Dienstag, 20. März 2018, 18:45–19:00, Z6 - SR 2.013
The IceCube Neutrino Observatory as an instrument for glaciology — •Martin Rongen and Christopher Wiebusch for the IceCube collaboration — III. Physikalisches Institut B, RWTH Aachen University
The IceCube Neutrino Observatory instruments about 1 km3 of deep, glacial ice at the geographic South Pole with 5160 optical modules to detect Cherenkov light of passing particles. After discovering a diffuse flux of high-energy cosmic neutrinos, there is an on-going search to identify their astrophysical sources. This effort relies heavily on an ever more precise understanding of the optical scattering and absorption properties of the instrumented ice. In turn, IceCube can now provide a unique insight into the glacier which, due to the large distances observed, is in many ways complementary to ice cores. We observe a direction-dependent extinction length, with the direction of least extinction being aligned with the local flow direction of the ice. In this talk, a depth-dependent measurement of the strength of this anisotropy will be presented. Possible explanations of the effect are going to be discussed.