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T: Fachverband Teilchenphysik
T 73: Multi-messenger astronomy
T 73.1: Vortrag
Donnerstag, 2. April 2020, 16:30–16:45, H-HS X
Investigation of the Neutrino Emission from Supermassive Black Hole Mergers and Starburst Galaxies — •Ilja Jaroschewski1, Julia Tjus1, and Peter L. Biermann2,3,4,5 — 1Theoretische Physik IV, Ruhr-Universität Bochum, Bochum — 2MPI for Radioastr., Bonn — 3Dept. of Phys., Karlsruhe Inst. for Tech., Karlsruhe — 4Dept. of Phys.& Astron., U. Alabama, Tuscaloosa, AL, USA — 5Dept. of Phys. & Astron., Univ. Bonn, Bonn
The first detection of non-terrestrial, high-energy neutrinos by IceCube in 2013 as well as the high-probability association of such a neutrino to the blazar TXS 0506+056 are fundamental achievements in neutrino Astronomy. Along with the successful detection of gravitational waves in September 2015 by LIGO and the clear identification of the neutrino merger GW170817, these detections opened both new branches in multi-messenger Astrophysics. With 10 binary black hole mergers already documented and more to come there are strong indications that supermassive black holes in galaxy centers also merge and had at least one merger in their lifetime.
Such a merger is almost always accompanied by a change of the jet direction leading to interactions of the jet with molecular clouds and therefore neutrino productions.
In this work, a connection between the radiated gravitational wave energy of supermassive black hole mergers and the high-energy neutrino flux is suggested. It is estimated, whether these mergers could contribute to the diffuse astrophysical neutrino flux that is measured by IceCube, with the rest contributed by starburst galaxies.