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T: Fachverband Teilchenphysik

T 67: Neutrino astronomy III

T 67.6: Vortrag

Mittwoch, 17. März 2021, 17:15–17:30, Tq

Investigation of the Neutrino Emission from Supermassive Black Hole Mergers and Starburst Galaxies — •Ilja Jaroschewski¹, Julia Becker Tjus¹, and Peter L. Biermann^2,3,4,5 — ¹Theoretische Physik IV, Ruhr-Universität Bochum — ²MPI for Radioastr., Bonn — ³Dept. of Phys., Karlsruhe Inst. for Tech. — ⁴Dept. of Phys. & Astron., Univ. Alabama, Tuscaloosa, AL, USA — ⁵Dept. of Phys. & Astron., Univ. 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 in 2017 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 binary neutron star merger GW170817, these detections opened both new branches in multi-messenger astrophysics. With over a dozen binary black hole mergers already documented and more to come, there are strong indications that supermassive black holes in galaxy centers also merge and have 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, the connection between the radiated gravitational wave energy of supermassive black hole mergers and the diffuse astrophysical neutrino flux that is measured by IceCube is investigated. It is estimated whether these mergers contribute to the diffuse neutrino flux and how much starburst galaxies can contribute.