Hamburg 2016 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 41: Neutrinoastronomie
T 41.9: Vortrag
Montag, 29. Februar 2016, 18:45–19:00, VMP9 SR 30
Search for neutrinos from flaring blazars — •Michael Kreter1,2, Thomas Eberl2, Clancy James2, and Matthias Kadler1 for the ANTARES-KM3NeT-Erlangen collaboration — 1Lehrstuhl für Astronomie, Universität Würzburg, Emil-Fischer-Strasse 31, 97074 Würzburg, Germany — 2ECAP, Universität Erlangen-Nürnberg, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany
Jets from Active Galactic Nuclei (AGN) are among the best candidates for the recently detected extraterrestrial neutrino flux. Hadronic AGN jet-emission models predict a tight correlation between the neutrino flux and the time-variable gamma-ray emission. At the same time, the atmospheric-background (noise) signal, which often dominates in neutrino-astronomical observations, can be substantially reduced by rejecting long-lasting periods of low flux. For these reasons, short high-amplitude gamma-ray flares, as often observed in blazars, can be used to substantially increase the sensitivity of neutrino telescopes in point-source searches. We develop a strategy to search for TeV neutrinos from flaring blazar jets from the TANAMI sample using the ANTARES telescope and Fermi gamma-ray light curves. An unbinned maximum-likelihood method is applied to optimize the probability of a neutrino detection from TANAMI sources.