Dresden 2013 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 87: Neutrinoastronomie 2

T 87.7: Vortrag

Montag, 4. März 2013, 18:15–18:30, HSZ-E03

Search for neutrinos from cosmic-ray accelerators with the IceCube neutrino telescope — •Sirin Odrowski — Technische Universität München, D- 85748 Garching

The acceleration of cosmic-rays is thought to be connected to the production of high-energy neutrinos in the interactions with matter or radiation in or near the sources. If detected, these high-energy neutrinos will point back to the site of their production. The detection of an astrophysical neutrino source could thus contribute significantly to the identification of the sources of the high-energy cosmic radiation. In this contribution we will present the results of a search for this kind of neutrino sources with three years of data from the IceCube neutrino telescope. These data include besides the half-completed IceCube 40-string configuration and the IceCube 59-string configuration also the data from the IceCube 79-string detector, a nearly final version of the now completed IceCube. We will focus in particular on the background rejection performed for this data sample and present how the data from different years is being combined in searches. The sensitivity of the search for point-like neutrino sources with these data is about a factor 3.5 better than the last published IceCube search of this kind. We will present the results of this search, and discuss the implications of the obtained limits. As an outlook, we will highlight the possibilities to use the available data to search for neutrino signals beyond the hypothesis of a strong point-like source. These are particularly interesting in the case of Galactic sources where several nearby but weak sources may be present.