Irkutsk, Russian Federation
employee from 01.01.1999 until now
Irkutsk, Irkutsk region, Russian Federation
Irkutsk, Russian Federation
Basing on measurements of cosmic rays at the worldwide network of stations, we calculate variations in the planetary system of geomagnetic cutoff rigidity for the 2015 June moderate geomagnetic storm. Using the axisymmetric model of the limited magnetosphere taking into account magnetopause currents and the ring current, we determine the distance to the subsolar point and the ring current radius, as well as the contribution of the ring current to variations in the geomagnetic cutoff rigidity and to the Dst index.
magnetosphere, current system, magnetic storm, cosmic rays
1. Dvornikov V.M., Sdobnov V.E., Sergeev A.V. Informativity of the Spectrographic Global Survey Method. Preprint SibIZMIR N 25-84. Irkutsk, 1984. 26 p. (In Russian).
2. Dvornikov V.M., Sdobnov V.E., Sergeev A.V. Spectrographic Global Survey method for research into variations of intensity of cosmic rays of interplanetary and magnetospheric origins. Variatsii kosmicheskikh luchei i issledovaniya kosmosa: Sbornik nauchnykh trudov [Cosmic Ray Variations and space research: Collected papers]. Moscow, IZMIRAN Publ., 1986. pp. 232-237. (In Russian).
3. Kichigin G.N., Sdobnov V.E. Rigidities of geomagnetic cutoff of cosmic rays in the model of bounded magnetosphere with a ring current. Geomanetizm i aeronomiya [Geomagnetism and Aeronomy]. 2017, vol. 57, no. 2, pp. 149-153. (In Russian).
4. Alexeev I.I., Belenkaya E.S., Kalegaev V.V., et al. Magnetic storms and magnetotail currents // J. Geophys. Res. 1996. V. 101. P. 7737-7747.
5. Alexeev I.I., Kalegaev V.V., Belenkaya E.S., Bobrovnikov S.Yu., Feldstein Ya.I., Gromova L.I. The model description of magnetospheric magnetic field in the course of magnetic storm on January 9-12, 1997 // J. Geophys. Res. 2001. V. 106. P. 25683-25694.
6. Feldstein Y.I., Levitin A.E., Kozyra J., et al. Self-consistent modeling of the large-scale distortions in the geomagnetic field during the 24-27 September 1998 major magnetic storm // J. Geophys. Res. 2005. V. 110, N A11. DOI: 10.1029/ 2004JA010584.
7. Ganushkina N.Yu., Pulkkinen T.I., Kubyshkina M.V., et al. Long-term evolution of magnetospheric current systems during storms // Ann. Geophys. 2004. V. 22. P. 1317-1334.
8. Greenspan M.E., Hamilton D.C. A test of the Dessler-Parker-Sckopke relation during magnetic storms // J. Geophys. Res. 2000. V. 105. P. 5419-5430.
9. Kalegaev V.V., Ganushkina N.Yu., Pulkkinen T.I., et al. Relation between the ring current and the tail current during magnetic storms // Ann. Geophys. 2005. V. 26, N 2. P. 523-533.
10. Maltsev Y.P., Arykov A.A., Belova E.G., et al. Magnetic flux redistribution in the storm time magnetosphere // J. Geo-phys. Res. 1996. V. 101. P. 7697-7707.
11. Ohtani S., Nose M., Rostoker G., et al. Storm-substorm relationship: Contribution of the tail current to Dst // J. Geophys. Res. 2001. V. 106. P. 21199-21209.
12. Tyasto M.I., Danilova O.A., Sdobnov V.E. Comparison of cosmic ray cutoff rigidities as calculated with two empirical magnetospheric models for the extreme event of November 2003 // J. Phys.: Conference Ser. 2013. 409. 012224. DOI:https://doi.org/10.1088/1742-6596/409/1/012224.
13. Tyasto M.I., Danilova O.A., Sdobnov V.E. Variations in the geomagnetic cutoff rigidity of cosmic rays in the period of magnetospheric disturbances of May 2005: Their correlation with interplanetary parameters // Bull. Russ. Acad. Sci. Phys. 2011. 75: 808. DOI:https://doi.org/10.3103/S1062873811060414.
14. URL: ftp://cr0.irmiran.rssi.ru (accessed May 5, 2017).
15. URL: https://www.solarmonitor.org (accessed May 5, 2017)
16. URL: http://omniweb.gsfc.nasa.gov (accessed May 5, 2017)
17. URL: http://cdaw.gsfc.nasa.g/CME_list/UNIVERSAL/2015 _06/univ2015_06.html
