SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 119: Neutrino Astronomy IV

T 119.3: Vortrag

Donnerstag, 23. März 2023, 16:20–16:35, POT/0112

Solving the multi-messenger puzzle of the AGN-starburst composite galaxy NGC 1068 $^*$ — Bjoern Eichmann^1,2, Foteini Oikonomou², •Silvia Salvatore¹, Ralf Juergen Dettmar¹, and Julia Becker Tjus¹ — ¹Theoretical Physics IV, Ruhr University Bochum, Bochum, Germany — ²Institutt for fysikk, Norwegian University for Science and Technology (NTNU), Trondheim, Norway

Multi-wavelength observations indicate that some starburst galaxies show a dominant non-thermal contribution from their central region. These active galactic nuclei (AGN)-starburst composites are of special interest, as both phenomena on their own are potential sources of highly-energetic cosmic rays and associated gamma-ray and neutrino emission. In our work, a homogeneous, steady-state two-zone multi-messenger model of the non-thermal emission from the AGN corona as well as the circumnuclear starburst region is developed and subsequently applied to the case of NGC 1068, which has recently shown some first indications of high-energy neutrino emission. We show that the entire spectrum of multi-messenger data - from radio to gamma-rays including the neutrino constraint - can be described very well if both, starburst and AGN corona, are taken into account. Using only a single emission region is not sufficient.

Supported by DFG (SFB|,1491)