Speaker: Mateusz Dyndal (AGH) Title: “Recent measurements in ultraperipheral collisions with the ATLAS detector” Abstract: Ultra-peripheral collisions (UPC) of relativistic heavy-ion beams lead to a diverse set of photon-nucleus and photon-photon interactions. This talk presents a series of recent measurements of such processes performed by the ATLAS Collaboration. A new measurement of dijet production in UPC Pb+Pb collisions using high-statistics 2018 Pb+Pb data, is presented. In this process the photon can provide a clean probe of the partonic structure of the nucleus analogous with deep inelastic scattering. In addition, new measurements of exclusive dilepton production (electron and tau pairs) are discussed. These processes provide strong constraints on the nuclear photon flux and its dependence on the impact parameter and photon energy. In particular, measurements of the cross-sections in the absence of forward neutrons provide an additional experimental handle on the impact parameter range sampled in the observed events. Furthermore, the tau-pair production measurements can constrain the tau lepton's anomalous magnetic dipole moment.