Bonn 2010 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 100: Neutrinoastronomie IV

T 100.5: Vortrag

Donnerstag, 18. März 2010, 17:45–18:00, Arithmeum

Search for Neutrinos from the direction of the Galactic Center with IceCube — •Jan-Patrick Hülß and Christopher Wiebusch — III. Physikalisches Institut, RWTH Aachen, D-52056 Aachen

The IceCube detector located at the geographic South Pole is designed to detect high-energy neutrinos. Neutrinos originating from the Northern sky travel through the earth. Neutrino-induced muons are recorded as up-going events. In contrast, neutrinos from the Southern sky (e.g. from the direction of the Galactic Center) induce downward moving muons. These are hidden in the overwhelming background of muons produced by air showers in the atmosphere. The neutrino events can be identified if they interact within the detector volume and induce a starting muon track. With the DeepCore enhancement, IceCube is able to identify this signature with high efficiency. It consists of additional sensitive modules in the lower center of IceCube and is scheduled for commissioning in spring 2010.

This analysis searches for neutrinos from a point source or WIMP annihilation in the direction of the Galactic Center region by selecting down-going starting events. The used data are recorded with IceCube in 2008-2009 (40 string configuration) and the analysis techniques anticipated for DeepCore are applied. The result of this analysis is presented.