EL BYAD, HamzaHamzaEL BYADBACHETTI, MatteoMatteoBACHETTISilvia ColumbuGiuseppe RodriguezPILIA, MauraMauraPILIAMatthew J. MiddletonDominic J. WaltonMurray BrightmanHannah EarnshawKarl ForsterBrian GrefenstetteFelix FürstMarianne HeidaIMBROGNO, MatteoMatteoIMBROGNOLAI, Eleonora VeronicaEleonora VeronicaLAIThomas Maccarone2025-09-052025-09-052025-08-18http://hdl.handle.net/20.500.12386/43578The study of quasiperiodic oscillations (QPOs) in X-ray binaries provides valuable insights into the physics of accretion around compact objects. The M82 galaxy hosts multiple ultraluminous X-ray sources, including two prominent ones—X-1 and X-2—where X-1 is suspected to harbor an intermediate-mass black hole. In this work, we analyze data from 39 NuSTAR observations acquired between 2014 and 2024 to investigate the aperiodic X-ray variability in M82. In particular, we study in detail the evolution of the QPOs from M82 X-1 in the range 20–300 mHz. We do not find additional timing features in the data, besides a frequently present broad noise component at lower frequencies. The QPO behaves similarly to other classes of low-frequency oscillations in accreting compact objects, both black holes and neutron stars.STAMPAenArticle10.3847/1538-4357/aded8aFIS/05 - ASTRONOMIA E ASTROFISICAPhysical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_10 High energy and particle astronomy – X-rays, cosmic rays, gamma rays, neutrinos