Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 86: Multi-Messenger

T 86.1: Talk

Thursday, March 28, 2019, 16:00–16:15, S13

Automatic Neutrino Follow-Up Searches with the Pierre Auger Observatory — •Michael Schimp — Bergische Universität Wuppertal, Gaußstr. 20, 42119 Wuppertal

The Pierre Auger Observatory is sensitive to ultra-high energy neutrinos (UHE neutrinos; E_ν > 0.1 EeV) due to the discriminability of neutrino-induced air showers from nucleus-induced air showers at high inclinations (60^∘< θ < 95^∘), and the Observatory’s large acceptance. Its sensitivity to a diffuse UHE neutrino flux is competitive to the sensitivity of other neutrino detectors. Additionally, its field of view, spanning the declination region from −85^∘ to 60^∘, is changing throughout the day and its exposure is non-uniform in inclination, meaning that it samples different regions of the sky with much enhanced sensitivity for certain fractions of the day. Therefore, it is very sensitive to transient sources that are in its field of view at the time of increased emission. One example demonstrating this was the follow-up search of the source of GW170817, the first ever observed binary neutron star merger. In this search, the sensitivity of the Pierre Auger Observatory to prompt UHE neutrino emission exceeded the sensitivities of the other instruments by at least an order of magnitude. Also, a procedure to automatically follow up the open public alerts of the current observing run (O3) of the LIGO/Virgo gravitational wave observatories will be shown.

*Gefördert durch die BMBF Verbundforschung Astroteilchenphysik (Vorhaben 05A17PX1).