Sitarek, JulianJulianSitarekGonzález, Josefa BecerraJosefa BecerraGonzálezRamazani, Vandad FallahVandad FallahRamazaniLindfors, ElinaElinaLindforsPedaletti, GiovannaGiovannaPedalettiTavecchio, FabrizioFabrizioTavecchioAcosta, Monica VazquezMonica VazquezAcostaLarsson, StefanStefanLarssonBaliyan, KiranKiranBaliyanKaur, NavpreetNavpreetKaurSameer,SameerJorstad, SvetlanaSvetlanaJorstadRaiteri, ClaudiaClaudiaRaiteri2025-08-302025-08-302017-01-012-s2.0-85046057223https://d8.irins.org/handle/IITG2025/23046PKS1510-089 is a flat spectrum radio quasar located at a redshift of 0.36. It is one of only a few such sources detected in very-high-energy (VHE, >100 GeV) gamma rays. Though PKS1510-089 is highly variable at GeV energies, until recently no variability has been observed in the VHE band. In 2015 May PKS1510-089 showed a high state in optical and in the GeV range. A VHE gamma-ray flare was detected with MAGIC at that time, showing the first instance of VHE gamma-ray flux variability on the time scale of days in this source. We will present the MAGIC results from this observation, discuss their temporal and spectral properties in the multi-wavelength context and present modelling of such emission in the external Compton scenario.falseConference Paper1824803920170cpConference Proceeding