TY - JOUR A1 - Reichert, Tom Andre A1 - Steinheimer-Froschauer, Jan A1 - Herold, Christoph A1 - Limphirat, Ayut A1 - Bleicher, Marcus T1 - Harmonic flow correlations in Au+Au reactions at 1.23 AGeV: a new testing ground for the equation-of-state and expansion geometry T2 - The European physical journal. C, Particles and fields N2 - Correlations between the harmonic flow coefficients v1, v2, v3 and v4 of nucleons in semi-peripheral Au+Au collisions at a beam energy of 1.23 AGeV are investigated within the hadronic transport approach ultra-relativistic quantum molecular dynamics (UrQMD). In contrast to ultra-relativistic collision energies (where the flow coefficients are evaluated with respect to the respective event plane), we predict strong correlations between the flow harmonics with respect to the reaction plane. Based on an event-by-event selection of the midrapidity final state elliptic flow of nucleons we show that as a function of rapidity, (I) the sign of the triangular flow changes, (II) that the shape of v4 changes from convex to concave, and (III) that v3∝v1v2 and v4∝v22 for all different event classes, indicating strong correlations between all investigated harmonic flow coefficients. Y1 - 2022 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/69445 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-694452 SN - 1434-6052 N1 - This article is part of a project that has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement STRONG-2020 – No 824093. J.S. thanks the Samson AG for funding. This project was supported by the DAAD (PPP Thailand). This research has received funding support from the NSRF via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation [grant number B16F640076]. N1 - Funded by SCOAP3 VL - 82 IS - 6, art. 510 SP - 1 EP - 9 PB - Springer CY - Berlin ; Heidelberg ER -