1. Mironova, I.; Kovaltsov, G.; Mishev, A.; Artamonov, A. Ionization in the Earth’s Atmosphere Due to Isotropic Energetic Electron Precipitation: Ion Production and Primary Electron Spectra. Remote Sens. 202113, 4161.
  2. Bruno, A. …… Koldobskiy, S. et al. (2021). Solar-cycle Variations of South Atlantic Anomaly Proton Intensities Measured with the PAMELA Mission. The Astrophysical Journal Letters, 917, doi:10.3847/2041-8213/ac1a74.
  3. Koldobskiy, S., Neronov, A.,Semikoz D. (2021). Pion decay model of the Tibet-ASγ PeV gamma-ray signal. Phys. Rev. D, 104, doi:10.1103/PhysRevD.104.043010.
  4. Usoskin, I. G., & Kovaltsov, G. A. (2021). Mind the gap: New precise 14C data indicate the nature of extreme solar particle events. Geophysical Research Letters, 48, e2021GL094848. doi:10.1029/2021GL094848
  5. Mishev, A., Poluianov, S. About the Altitude Profile of the Atmospheric Cut-Off of Cosmic Rays: New Revised Assessment. Solar Physics, 296 (8), 2021, doi: 10.1007/s11207-021-01875-5.
  6. Aguilar, M. … I.G. Usoskin and S. Poluianov et al. (AMS collaboration), Properties of a New Group of Cosmic Nuclei: Results from the Alpha Magnetic Spectrometer on Sodium, Aluminum, and Nitrogen, Phys. Rev. Lett., 127, 021101 (2021), doi: 10.1103/PhysRevLett.127.021101
  7. Velinov, Peter I. Y.; Mishev, Alexander (2021) Influence of forbush effect on atmospheric ionization due to solar energtic particles. Comptes rendus de l’Académie bulgare des Sciences 74(6): 868-878.
  8. Kocharov, L., N. Omodei, A. Mishev, M. Pesce-Rollins, F. Longo, S. Yu, D.E. Gary, R. Vainio, I. Usoskin, Multiple Sources of Solar High-energy Protons, Astrophys. J., 915, 12 (2021) doi: 10.3847/1538-4357/abff57
  9. Mishev, A.L., Koldobskiy, S.A., Kocharov, L.G. et al. GLE # 67 Event on 2 November 2003: An Analysis of the Spectral and Anisotropy Characteristics Using Verified Yield Function and Detrended Neutron Monitor Data. Sol Phys 296, 79 (2021) doi:10.1007/s11207-021-01832-2
  10. Similä, M., I. Usoskin, S. Poluianov, A. Mishev, G.A. Kovaltsov, D. Strauss, High-Altitude Polar NM With the New DAQ System as a Tool to Study Details of the Cosmic-Ray Induced Nucleonic Cascade, J. Geophys. Res. Space Phys., 126, e2020JA028959, 2021, doi: 10.1029/2020JA028959.
  11. Mishev, A. L., Koldobskiy, S. A., Usoskin, I. G., Kocharov, L. G., & Kovaltsov, G. A. Application of the verified neutron monitor yield function for an extended analysis of the GLE # 71 on 17 May 2012. Space Weather 19(2), e2020SW002626, 2021, doi: 10.1029/2020SW002626


  1. A.L.Mishev, P.I.Y. Velinov, Ionization effect in the Earth’s atmosphere during the sequence of October–November 2003 Halloween GLE events, Journal of Atmospheric and Solar-Terrestrial Physics, 211, 105484,  2020, doi: 10.1016/j.jastp.2020.105484

A list of non-referenced publications

  1. S. Koldobskiy, G. Kovaltsov, I. Usoskin, Role of heavier-than-proton nuclei in neutron monitor response, Proc. Of Sci., 395 (ICRC2021), 1284, 2021.
  2. S. Koldobskiy, O. Raukunen, R. Vainio, G. Kovaltsov, I. Usoskin, New reconstruction of the event-integrated spectra for GLE events, Proc. Of Sci., 395 (ICRC2021), 1273, 2021.
  3. A. Mishev, S. Koldobskiy, G. Kovaltsov, A. Gil, I. Usoskin, New neutron monitor altitude-dependent yield function and its application to an analysis of neutron-monitor data, Proc. Of Sci., 395 (ICRC2021), 1247, 2021.
  4. Similä, M., Poluianov, S. Usoskin, I., Mishev, A., Kovaltsov, G., Strauss, D.T. Pulse height-length analysis of data from neutron monitors DOMC/DOMB with a new data acquisition system, Proc. Of Sci., 395 (ICRC2021), 1237, 2021. doi:10.22323/1.395.1237
  5. Poluianov, S. and Mishev, A. The altitude profile of the cosmic ray atmospheric cutoff, Proc. Of Sci., 395 (ICRC2021), 1331, 2021. doi:10.22323/1.395.1331
  6. Usoskin, I., S. Koldobskiy, G. Kovaltsov, E. Rozanov, T. Sukhodolov, A. Mishev and I. Mironova, Strongest directly observed Solar Proton Event of 23-Feb-1956: Revised reference for the cosmogenic-isotope method, Proc. Of Sci., 395 (ICRC2021), 1319, 2021.
  7. Usoskin, I., S. Koldobskiy, A. Gil, G. Kovaltsov, I. Usoskina, T. Willamo and A. Ibragimov, A major update of the International GLE Database: Correction for the variable GCR background, Proc. Of Sci., 395 (ICRC2021), 1241, 2021.
  8. Kasztelan, M. M. Kasztelan, T. Enqvist, K. Jędrzejczak, J. Joutsenvaara, O. Kotavaara, P. Kuusiniemi, K.K. Loo, J. Orzechowski, J. Puputti, A. Sobkow, M. Słupecki, J. Szabelski, I. Usoskin, W.H. Trzaska and T.E. Ward, High-multiplicity neutron events registered by NEMESIS experiment, Proc. Of Sci., 395 (ICRC2021), 497, 2021.
  9. Trzaska, W.H. T. Enqvist, K. Jedrzejczak, J. Joutsenvaara, M. Kasztelan, O. Kotavaara, P. Kuusiniemi, K.K. Loo, J. Orzechowski, J. Puputti, A. Sobkow, M. Slupecki, J. Szabelski, I. Usoskin and T. E. Ward, New NEMESIS results, Proc. Of Sci., 395 (ICRC2021), 514, 2021.
  10. Poluianov, S., I. Usoskin, A. Ibragimov, Data management at the Oulu cosmic ray station, in: Cosmic ray studies with neutron detectors, pp. 205-207, Kiel University Publ. (2021) doi: 10.38072/2748-3150/p25.
  11. Similä, M., S. Poluianov, I. Usoskin, Study of individual pulses at the Antarctic high-altitude neutron monitor DOMC, in: Cosmic ray studies with neutron detectors, pp. 173-176, Kiel University Publ. (2021) doi: 10.38072/2748-3150/p22.
  12. Poluianov, S., I. Usoskin, D.T. Strauss, Upgrade of electronics of neutron monitors DOMC and DOMB, in: Cosmic ray studies with neutron detectors, pp- 167-172, Kiel University Publ. (2021) doi: 10.38072/2748-3150/p21.
  13. Abunina, M. R. Bütikofer, K.L. Klein, O. Kryakunova, M. Laurenza, D. Ruffolo, D. Sapundjiev, C. Steiges, I. Usoskin, 1st virtual symposium on cosmic ray studies with neutron detectors, in: Cosmic ray studies with neutron detectors, pp. 7-12, Kiel University Publ. (2021) doi: 10.38072/2748-3150/p1.