Abstract
The data on fluxes of electrons with energy Ee > 1 MeV and on radiation doses under the Al shielding of about 2 g/cm2 measured on the GLONASS satellite (circular orbit with altitude 20000 km and inclination 65°) for the period from December 2006 through May 2010 are analyzed. The minimum of the 23rd solar cycle turned out to be the longest for all over the space exploration age. Consequently, average semiannual electron fluxes and daily radiation doses are showing the decrease by more than an order of magnitude in comparison with the levels observed in 2007. We present an example of a diffusion wave of relativistic electrons; the wave develops in a period between magnetic storms. This process may result in a significant increase of the radiation dose measured in the orbit, even under the conditions of weak geomagnetic disturbances. The dynamics of variations in relativistic electron fluxes during the magnetic storm of April 5–6, 2010, is discussed so far as this is the first strong flux enhancement in the 24th solar cycle.
Similar content being viewed by others
References
Friedel, R.H.W., Reeves, G.D., and Obara, T., Relativistic electron dynamic in the inner magnetosphere: AReview, J. Atmos. Solar-Terr. Phys., 2002, vol. 64, pp. 265–282.
Ivanova, T.A., Pavlov, N.N., Reizman, S.Ya., Rubinshtein, I.A., Sosnovets, E.N., and Tverskaya, L.V., Dynamics of the External Radiation Electron Belt in a Solar Minimum, Geomagn. Aeron., 2000, vol. 40, no. 1, p. 13.
Lazutin, L.L., and Kuznetsov, S.N., Nature of Sudden Auroral Activations at the Beginning of Magnetic Storms, Geomagn. Aeron., 2008, vol. 48, no. 2, pp. 173–182.
Tverskaya, L.V. and Khorosheva, O.V., Features of the Development of Giant DR-2 Variations during a Storm, Geomagn. Aeron., 1974, vol. 14, no. 1, pp. 106–110.
Tverskaya, L.V., About the boundary of Electron Injection into the Earth’s Magnetosphere, Geomagn. Aeron., 1986, vol. 26, pp. 864–865.
Tverskaya, L.V., Dynamic of Electrons in the Radiation Belts, AGU Monograph, 1996, no. 97, pp. 183–187.
Tverskaya, L.V., et al., Increase in Solar Protons and Dynamics of the Outer Radiation Electron Belt during Extreme Solar Activity Events in December 2006, Geomagn. Aeron., 2008, vol. 48, no. 6, pp. 751–758.
Tverskoy, B.A., Transfer and Acceleration of Charged Particles in the Earth’s Magnetosphere, Geomagn. Aeron., 1965, vol. 5, no. 5, pp. 793–808.
Tverskoy, B.A., Dinamika radiatsionnykh poyasov Zemli (Dynamics of the Earth’s Radiation Belts), Moscow: Nauka, 1968.
Tverskoy, B.A., Main Mechanisms in the Formation of the Earth’s Radiation Belts, Rev. Geophys., 1969, vol. 7, nos. 1–2, pp. 219–231.
Vette, J.L., The AE-8 Trapped-Electron Model Environment, Greenbelt, Maryland: NSSDC; WDC-A-R&S, 1991, pp. 91–24.
Volkov, I.B, Dronov, A.V., Kovrygina, L.M., Kratenko, Yu.I., Mineev, Yu.V., Sosnovets, E.N., and Tverskaya, L.A., Dynamics of the Outer Belt of Energetic Electrons from the Data of Simultaneous Measurements on the INTERKOSMOS-19 and KOSMOS-900 satellites, Geomagn. Aeron., 1984, vol. 24, no. 4, pp. 642–646.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © L.V. Tverskaya, S.V. Balashov, N.N. Veden’kin, V.V. Ivanov, D.S. Karpenko, S.G. Kochura, I.A. Maksimov, S.I. Open’ko, N.N. Pavlov, S.Ya. Reizman, I.A. Rubinshtein, N.N. Sitnokova, M.V. Tel’tsov, D.A. Trofimchuk, V.I. Tulupov, 2012, published in Geomagnetizm i Aeronomiya, 2012, Vol. 52, No. 6, pp. 779–784.
Rights and permissions
About this article
Cite this article
Tverskaya, L.V., Balashov, S.V., Veden’kin, N.N. et al. Outer radiation belt of relativistic electrons during the minimum of the 23rd solar cycle. Geomagn. Aeron. 52, 740–745 (2012). https://doi.org/10.1134/S0016793212060126
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0016793212060126