Influence of heliospheric and geomagnetic activity on the dynamics of the relativistic electron fluxes in the Earth’s outer radiation belt around the minimum of the solar activity in 2008–2010

Pleiades Publishing Ltd - Tập 54 - Trang 558-567 - 2014
Yu. S. Shugay1, I. S. Veselovsky1,2, O. S. Yakovchouk1, I. N. Myagkova1
1Skobeltsyn Research Institute of Nuclear Physics, Moscow State University, Moscow, Russia
2Space Research Institute, Russian Academy of Sciences, Moscow, Russia

Tóm tắt

The relativistic electron flux in the Earth’s outer radiation belt generally decreased by almost three orders of magnitude during the minimum of cycle 23 in 2009. Such a behavior was possibly caused by very low geomagnetic activity during an extremely weak interplanetary field in that period. This decrease was replaced by an increase in the relativistic electron flux by two orders of magnitude during several months after the sunspot minimum at the beginning of 2010.

Tài liệu tham khảo

Antonova, E.E., Myagkova, I.M., Stepanova, M.V., Riazantseva, M.O., Ovchinnikov, I.L., Mar’in, B.V., and Karavaev, M.V., Local particle traps in the high latitude magnetosphere and the acceleration of relativistic electrons, J. Atmos. Sol.-Terr. Phys., 2011, vol. 73, pp. 1465–1471. doi:10.1016/j.jastp.2010.11.020 Boynton, R.J., Balikhin, M.A., Billings, S.A., Reeves, G.D., Ganushkina, N., Gedalin, M., Amariutei, O.A., Borovsky, J.E., and Walker, S.N., The analysis of electron fluxes at geosynchronous orbit employing a NARMAX approach, J. Geophys. Res., 2013, vol. 118, pp. 1500–1513. doi 10.1002/jgra.50192 Friedel, R.H., Reeves, W.G.P., and Obara, T., Relativistic electron dynamics in the inner magnetosphere: A review, J. Atmos. Sol.-Terr. Phys., 2002, vol. 64, pp. 265–283. doi 10.1016/S1364-6826(01)00088-8 Iucci, N., Levitin, A.E., Belov, A.V., et al., Space weather conditions and spacecraft anomalies in different orbits, Space Weather, 2005, vol. 3, no. 1, p. S01001. doi 10.1029/2003SW000056 Kataoka, R. and Miyoshi, Y., Why are relativistic electrons persistently quiet at geosynchronous orbit in 2009?, Space Weather, 2010, vol. 8, p. S08002. doi 10.1029/2010SW000571 Kellerman, A.C. and Shprits, Y.Y., On the influence of solar wind conditions on the outer-electron radiation belt, J. Geophys. Res., 2012, vol. 117A, p. A05217. doi 10.1029/2011JA017253 Kuznetsov, S., Yushkov, B., Denisov, Y.I., et al., Dynamics of the boundary of the penetration of solar energetic particles to earth’s magnetosphere according to Coronas-F data, Sol. Syst. Res., 2007, vol. 41, no. 4, pp. 348–353. doi 10.1134/S0038094607040089 Li, K.J., Feng, W., Liang, H.F., et al., A brief review on the presentation of cycle 24, the first integrated solar cycle in the new millennium, Ann. Geophys., 2011, vol. 29, pp. 341–348. doi 10.5194/angeo-29-341-2011 McPherron, R.L., Baker, D.N., and Crooker, N.U., Role of the Russell-McPherron effect in the acceleration of relativistic electrons, J. Atmos. Sol.-Terr. Phys., 2009, vol. 71, nos. 10–11, pp. 1032–1044. doi 10.1016/j.jastr.2008.11.002 Mourenas, D., Artemyev, A., Agapitov, O., et al., Acceleration of radiation belts electrons by oblique chorus waves, J. Geophys. Res., 2012, vol. 117A, p. A10212. doi 10.1029/2012JA018041 Mozer, F.S., Bale, S.D., Bonnell, J.W., et al., Megavolt parallel potentials arising from double-layer streams in the Earth’s outer radiation belt, Phys. Rev. Lett., 2013, vol. 111, nos. 1–5, p. 235002. doi 10.1103/PhysRevLett.111.235002 Myagkova, I.N., Panasyuk, M.I., Denisov, Yu.I., et al., Correlation between the Earth’s outer radiation belt dynamics and solar wind parameters at the solar minimum according to EMP instrument data onboard the CORONAS-Foton satellite, Geomagn. Aeron., 2011, vol. 51, no. 7, pp. 897–901. doi 10.1134/S0016793211070164 Myagkova, I.N., Shugay, Yu.S., Veselovsky, I.S., and Yakovchouk, O.S., Comparative analysis of recurrent high-speed solar wind streams influence?on the radiation environment of near-Earth space in April–July 2010, Sol. Syst. Res., 2013, vol. 47, no. 2, pp. 127–140. O’Brien, T.P., McPherron, R.L., Sornette, D., et al., Which magnetic storms produce relativistic electrons at geosynchronous orbit, J. Geophys. Res., 2001, vol. 106A, pp. 15533–15544. Orlova, R.G., Shprits, Y.Y., Ni, B., Bounce-averaged diffusion coefficients due to resonant interaction of the outer radiation belt electrons with oblique chorus waves computed in a realistic magnetic field model, J. Geophys. Res., 2012, vol. 117A, p. A07209. doi 10.1029/2001JA000052. Paulikas, G.A. and Blake, J.B., Effects of the solar wind on magnetospheric dynamics: Energetic electrons at the synchronous orbit, Geophys. Monogr. Ser., 1979, vol. 21, pp. 180–202. Reeves, G.D., McAdams, K.L., Friedel, R.H.W., et al., Acceleration and loss of relativistic electrons during geomagnetic storms, Geophys. Res. Lett., 2003, vol. 30, p. 1529. doi 10.1029/2002GL016513 Reeves, G.D., Morley, S.K., Friedel, R.H.W., et al., On the relationship between relativistic electron flux and solar wind velocity: Paulikas and Blake revisited, J. Geophys. Res., 2011, vol. 116, p. A02213. Richardson, I.G. and Cane, H.V., Near-Earth interplanetary coronal mass ejections during solar cycle 23 (1996–2009): Catalog and summary of properties, Sol. Phys., 2010, vol. 264, pp. 189–237. doi 10.1007/s11207-010-9568-6 Romanova, N.V., Pilipenko, V.A., Yagova, N.V., and Belov, A.V., Statistical correlation of the rate of failures on geosynchronous satellites with fluxes of energetic electrons and protons, Cosmic Res., 2005, vol. 43, no. 3, pp. 179–185. Shprits, Y.Y., Elkington, S.R., Meredith, N.P., et al., Review of modeling of losses and sources of relativistic electrons in the outer radiation belts I: Radial transport, J. Atmos. Sol.-Terr. Phys., 2008, vol. 70, pp. 1679–1693. doi 10.1016/j.jastp.2008.06.008 Shprits, Y.Y., Subbotin, D., Ni, B., et al., Profound change of the near-Earth radiation environment caused by solar superstorms, Space Weather, 2011, vol. 9, no. 8. doi 10.1029/2011SW000662 Turner, D.L., Shprits, Y., Hartinger, M., et al., Explaining sudden losses of outer radiation belt electrons during geomagnetic storms, Nat. Phys., 2012, vol. 8, pp. 208–212. doi 10.1038/nphys2185 Tverskaya, L.V., Diagnostics of the magnetosphere based on the outer belt relativistic electrons and penetration of solar protons: A review, Geomagn. Aeron., 2011, vol. 51, pp. 6–22. Wang, Y.-M., Robbrecht, E., and Sheeley, N.R., Jr., On the weakening of the polar magnetic fields during solar cycle 23, Astrophys. J., 2009, vol. 707, pp. 1372–1386. doi 10.1088/0004-637X/707/2/1372