University of Oulu

Ilya Usoskin

CV
The group
List of publications
Position Professor, Head of Oulu Cosmic Ray station
Vice-Director of ReSoLVE Center of Excellence
Address: Sodankyla Geophysical Observatory (Oulu unit) and Dept. of Physics
P.O.Box 3000, FIN-90014 University of Oulu
FINLAND
Telephone: +358-50-3441247
e-mail:
Room: FY256-A
Official website: Ilya Usoskin
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Recent publications:
NEW -> Chatzistergos, T., N. Krivova, H. Sundermann, I. Usoskin (2025) Assessment of sunspot number cross-calibration approaches, Astron. Astrophys. 699, A157, doi: 10.1051/0004-6361/202554896

  • Usoskin, I., T. Chatzistergos, S.K. Solanki, N. Krivova, G. Kovaltsov, N. Brehm, M. Christl, L. Wacker (2025) Sunspot cycles for the first millennium BC reconstructed from radiocarbon, Astron. Astrophys. 698, A182, doi: 10.1051/0004-6361/202555148
  • Golubenko, K., I. Usoskin, E. Rozanov, E. Bard (2025) New SOCOL:14C-Ex model reveals that the Late-Glacial radiocarbon spike in 12350 BC was caused by the record-strong extreme solar storm, Earth Planet. Sci. Lett., 661, 119383, doi: 10.1016/j.epsl.2025.119383.
  • Papaioannou, A., A. Mishev, I. Usoskin, et al. (2025) The High-Energy Protons of the Ground Level Enhancement (GLE74) Event on 11 May 2024, Sol. Phys., 300, 73, doi: 10.1007/s11207-025-02486-0
  • Aguilar, M. et al. (2025) Properties of Cosmic Lithium Isotopes Measured by the Alpha Magnetic Spectrometer, Phys. Rev. Lett., 134, 201001, doi: 10.1103/PhysRevLett.134.201001.
  • Mukhopadhyay, A., S. Panovska, R. Garvey, M.W. Liemohn, N. Ganjushkina, A. Brenner, I. Usoskin, M. Balikhin, D.T. Wellinget (2025) Wandering of the auroral oval 41,000 years ago. Sci. Adv. 11, eadq7275, doi:10.1126/sciadv.adq7275
  • Acero, F.J., V. Carrasco, M. Gallego, I. Usoskin, J. Vaquero (2025) 14C-Based Sunspot Numbers for the Last Millennium Encompass the Full Range of Variability: Extreme Value Theory, Sol. Phys., 300, 50. Doi: 10.1007/s11207-025-02464-6
  • Morgenstern, O., R. Moss, M. Manning, G. Zeng, H. Schaefer, I. Usoskin, J. Turnbull, G. Brailsford, S. Nichol, T. Bromley (2025) Radiocarbon monoxide indicates increasing atmospheric oxidizing capacity, Nature Comm., 16, 249, doi: 10.1038/s41467-024-55603-1.
  • Aguilar, M. et al. (2025) Solar Modulation of Cosmic Nuclei over a Solar Cycle: Results from the Alpha Magnetic Spectrometer, Phys. Rev. Lett., 134, 051001. doi:10.1103/PhysRevLett.134.051001.
  • Aguilar, M. et al. (2025) Antiprotons and Elementary Particles over a Solar Cycle: Results from the Alpha Magnetic Spectrometer, Phys. Rev. Lett., 134, 051002. doi:10.1103/PhysRevLett.134.051002.
  • Vasilyev V., T. Reinhold, A. Shapiro, I. Usoskin, N. Krivova, H. Maehara, Y. Notsu, A. Brun, S. Solanki, L. Gizon (2024) Sun-like stars produce superflares roughly once per century, Science 386, 1301-1305. Doi:10.1126/science.adl5441.

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