University of Oulu

Ilya Usoskin

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
Telephone: +358-50-3441247
Room: BF125

!NEW! --> recruitment opportunity or visitor's grants are open at the ReSoLVE Centre of excellence

The Living Review paper has been announced as the most downloaded paper in Springer Astronomy in 2017 with >7600 downloads.

ALL publications --> click HERE

Recent publications:
NEW -> Poluianov, S., G.A. Kovaltsov and I.G. Usoskin, Solar energetic particles and galactic cosmic rays over millions of years as inferred from data on cosmogenic ^{26}Al in lunar samples, Astron. Astrophys., 618, A96, 2018, doi: 10.1051/0004-6361/201833561

  • Mishev, A., S. Tuohino, I.G. Usoskin, Neutron monitor count rate increase as a proxy for dose rate assessment at aviation altitudes during GLEs, J. Space Weath. Space Clim., 8, A46, 2018. doi: 10.1051/swsc/2018032
  • Uusitalo, J. L. Arppe, T. Hackman, S. Helama, G. Kovaltsov, K. Mielikäinen, H. Mäkinen, P. Nöjd, V. Palonen, I. Usoskin, M. Oinonen, Solar superstorm of AD 774 recorded subannually by Arctic tree rings, Nature Comm., 9, 3495, 2018, doi: 10.1038/s41467-018-05883-1
  • Mishev, A., I. Usoskin, O. Raukunen, M. Paassilta, E. Valtonen, L. Kocharov, R. Vainio, First Analysis of Ground-Level Enhancement (GLE) 72 on 10 September 2017: Spectral and Anisotropy Characteristics, Solar Phys., 293, 136, 2018, doi: 10.1007/s11207-018-1354-x
  • Wu, C.-J., I. G. Usoskin, N. Krivova, G.A. Kovaltsov, M. Baroni, E. Bard, S.K. Solanki, Solar activity over nine millennia: A consistent multi-proxy reconstruction, Astron. Astrophys., 615, A93, 2018. doi: 10.1051/0004-6361/201731892
  • Kocharov, L., S. Pohjolainen, M.J. Reiner, A. Mishev, H. Wang, I. Usoskin, R. Vainio, Spatial Organization of Seven Extreme Solar Energetic Particle Events, Astrophys. J. Lett., 862, L20, 2018. doi: 10.3847/2041-8213/aad18d
  • Usoskin, I.G., Comment on the paper by Popova et al. “On a role of quadruple component of magnetic field in defining solar activity in grand cycles”, J. Atmos. Solar-Terr. Phys., 176, 69-71, 2018, doi: 10.1016/j.jastp.2017.09.018
  • Koldobskiy, S.A., G.A. Kovaltsov, I.G. Usoskin, Effective rigidity of a polar neutron monitor for recording Ground-level enhancements, Solar Phys., 293, 110, 2018, doi: 10.1007/s11207-018-1326-1
  • Koldobskiy, S.A., G.A. Kovaltsov, I.G. Usoskin, A solar cycle of cosmic ray fluxes for 2006-2014: Comparison between PAMELA and neutron monitors, J. Geophys. Res. Space Phys., 123, 4479-4487, 2018. doi: 10.1029/2018JA025516.
  • Egorova, T., W. Schmutz, E. Rozanov, A.I. Shapiro, I. Usoskin, et al., Revised historical solar irradiance forcing, Astron. Astrophys., 615, A85, 2018. doi: 10.1051/0004-6361/201731199
  • Tuohino, S., A. Ibragimov, I. Usoskin, A. Mishev, Upgrade of GLE database: Assessment of effective dose rate at flight altitude, Adv. Space Res., 62, 398-407, 2018, doi: 10.1016/j.asr.2018.04.021
  • Willamo, T., I.G. Usoskin, G.A. Kovaltsov, A Test of the Active-Day Fraction Method of Sunspot Group Number Calibration: Dependence on the Level of Solar Activity, Solar Phys., 293, 69. 2018, doi: 10.1007/s11207-018-1292-7
  • Acero, F.G., M. C. Gallego, J. A. García, I. G. Usoskin, and J. M. Vaquero, Extreme Value Theory Applied to the Millennial Sunspot Number Series, Astrophys. J., 853, 80, 2018, doi: 10.3847/1538-4357/aaa406
  • Katsova, M.M., L.L. Kitchatinov, M.A. Livshits, D.L. Moss, D.D Sokoloff, I.G. Usoskin, Can Superflares Occur on the Sun? A View from Dynamo Theory, Astron. Rep., 62, 72-80, 2018, doi: 10.1134/S106377291801002X

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