SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 141: Neutrino Astronomy V
T 141.2: Vortrag
Donnerstag, 23. März 2023, 17:45–18:00, POT/0251
Neutrino Cadence of TXS 0506+056 Consistent with Supermassive Binary Origin* — Julia Becker Tjus1, •Ilja Jaroschewski1, Armin Ghorbanietemad1, Imre Bartos2, Emma Kun1,3,4, and Peter L. Biermann5,6 — 1Theoretical Physics IV, Ruhr University Bochum — 2Dept. of Phys., Univ. of Florida, USA — 3CSFK, MTA Centre of Excellence, Hungary — 4Konkoly Observatory, ELKH Research Centre for Astr. and Earth Sciences, Hungary — 5MPI for Radioastronomy, Bonn — 6Dept. of Phys. & Astr., Bonn
In the past, two distinct flares of high-energy neutrinos have been detected by the IceCube neutrino observatory from the direction of the blazar TXS 0506+056. In de Bruijn et al. 2020, it was shown that these two neutrino emission episodes could be due to an ongoing supermassive binary black hole (SMBBH) merger where jet precession close to final coalescence leads to periodic emission. This model made predictions on when the next neutrino emission episode must occur. On September 18, 2022, a new alert by IceCube indicated that a high-energy neutrino arrived from the direction of TXS 0506+056, consistent with the model prediction.
In this work, we show that these three distinct flares of neutrino emission from TXS 0506+056 are consistent with a SMBBH origin and constrain the total mass as well as mass ratio for the binary. We make predictions on when the next neutrino flares should happen and, for the first time, calculate the characteristic strain of its gravitational wave emission. *Supported by DFG (SFB 1491)